If a sample of aluminum with a density of 2.70 g/cm^3 displaces 36.0 mL of water when placed in a beaker, what is its mass?



13.3 g
97.2 g
0.075 g

Answers

Answer 1

Answer:

The answer is 97.2g .

Explanation:

Given that 1 mL is equals to 1 cm². Then we have to apply Density formula :

[tex]density = \frac{mass}{volume} [/tex]

[tex]let \: density = 2.7 \: , \: volume = 36[/tex]

[tex]2.7 = \frac{mass}{36} [/tex]

[tex]mass = 2.7 \times 36[/tex]

[tex]mass = 97.2 \: grams[/tex]


Related Questions

clearly distinguish between science and technology​

Answers

Answer:

The words science and technology can and often are used interchangeably. But the goal of science is the pursuit of knowledge for its own sake while the goal of technology is to create products that solve problems and improve human life. Simply put, technology is the practical application of science.

Explanation:

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Please help...

Draw a diagram showing the bonding in:

a) Tetrachloromethane [CCI4]

Answers

Answer:

here u go! ................

Answer:

Hope this is ok :))

Explanation:

What is the PRECAUTION for an Irritant?

Answers

prevent the release of toxic vapored, dusts, mists, or gases into the workplace air

If the temperature of a gas increased from 100K to 200K and the volume of a gas decreased from 20L to 10L, what is the new pressure I’d the original pressure was 100 kPa?

Answers

Answer:

400 kPa

Explanation:

using General Gas Law

[tex] \frac{100 \times 20}{100} = \frac{p \times 10}{200} [/tex]

[tex]p = 400[/tex]

The concept combined gas law is used here to determine the new pressure of the gas. The pressure of the gas obtained is 400 kPa.

What is combined gas law?

The equation connecting the volume, pressure and temperature of a gas can be represented mathematically by an equation called the combined gas law. In this equation the temperature should be always in Kelvin.

The combined gas law is also defined as the ideal gas law without Avogadro's law. It is the combination of Boyle's law, Charles's law and Gay-Lussac's law. The equation is given as:

PV/T = k

Here 'P' is the pressure, 'V' is the volume, 'T' is the temperature and 'k' is a constant. The equation for two gases of different volumes and temperature is:

P₁V₁ / T₁ = P₂V₂ / T₂

Then P₂ = P₁V₁T₂ / T₁V₂

Here the new pressure P₂ is:

P₂ = 100 × 20 × 200 / 100 × 10

P₂ = 400 kPa.

Thus the new pressure is 400 kPa.

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brainliest to whoever gets it the soonest, what SI unit do you use to measure the length of a book, and what tool and unit for the volume of a box?

Answers

The most appropriate SI unit used to measure the length of a book would be Centimeters.

The most appropriate SI unit to use for the volume of a book is centimeters cubed

PS: I am also a JoJo fan

Answer:

The SI unit of volume is the cubic meter (m 3 ), which is the volume occupied by a cube that measures 1 m on each side. This very large volume is not very convenient for typical use in a chemistry laboratory. A liter (L) is the volume of a cube that measures 10 cm (1 dm) on each side.

how many nitrogen atoms are in 18.8 g of barium nitride

Answers

18.8gBa(NO3)2 》》》》gN 》》》》 2.016gN

Difference between atomic number and atomic weight any 2 points

Answers

Answer:

According to the definitions given, atomic mass which is also called atomic weight is the measured total mass of an element's atom. Whereas, atomic number is nothing but the total number of neutrons and protons in the nucleus of an atom....

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The reactants of a reaction are 2AgClO3 and Na2CO3. According to the law of
conservation of matter, which of the following could be a product?
O A. NaOH
O B. Ag2CO3
O C. CaCO3
O D. AgNO3

Answers

Answer:

The answer is "Option B"

Explanation:

Law:

In the law of the conservation of matter, states the volume of matter throughout the process remains constant. In any particular case, it is closed to the movement of matter.  It is mostly on conservation of energy means, that the total mass of the products should consider the sum of the mass, which is the reactant of the event of chemical processes.

Reaction:

[tex]2AgClO_3+ Na_2CO_3= Ag_2CO_3+Na_2ClO_3[/tex]

In the above equation when we react to [tex]2AgClO_3[/tex] from the [tex]Na_2CO_3[/tex], it will give [tex]Ag_2CO_3 \ \ \text{and} \ \ Na_2ClO_3[/tex]. that's why option b is correct.

Answer:

Ag2CO3

Explanation:

Undulation in sandy material is called
cross-beds
ripple marks
mud cracks
O fossils

Answers

Answer:

ripple marks

Explanation:

Undulation is defined as the to and fro wavelike motion in a fluid or elastic medium.

Undulation in sandy material is called ripple marks because ripple marks are the sediments of rocks that show wavy structure at its surface due to agitation by water and wind.

Hence, the correct answer is "ripple marks".

Determinación de pH Expresa las siguientes concentraciones de [H+ ] en función del pH • [H+] = 0.001 M • [H+] = 0.002 M • [H+] = 2.45X10-4 M • [H+] = 5.2X10-9 M • [H+] = 0.04 M

Answers

Answer:

• pH = 3.0

• pH = 2.70

• pH = 3.61

• pH = 8.28

• pH = 1.40

Explanation:

El pH es una medida en química usada para determinar el grado de acidez o basicidad en una solución.

Se define como:

pH = -log₁₀ [H⁺]

El - logaritmo de la concentración molar de H⁺

Para las concentraciones de H⁺ dadas:

• [H+] = 0.001 M

pH = -log (0.001M) = 3

pH = 3.0

• [H+] = 0.002 M

pH = -log (0.002M)

pH = 2.70

• [H+] = 2.45X10-4 M

pH = -log (2.45X10-4 M )

pH = 3.61

• [H+] = 5.2X10-9 M

pH = -log (5.2X10-9 M)

pH = 8.28

• [H+] = 0.04 M

pH = -log (0.04M)

pH = 1.40

• Calculate relative formula masses from formulae and
from balanced equations?

Answers

Answer:

Explanation:

Simple molecules have very small masses. Instead of writing their actual masses in grams or kilograms, we usually use their relative formula masses. These are calculated using the chemical formula and the relative atomic masses of the elements in it.

Relative formula mass

Relative atomic mass has the symbol Ar. The Ar for an element is a measure of the mass of its atoms compared to the mass of carbon-12 atoms. The greater the Ar value, the more mass an element's atoms have. The periodic table shows the Ar value for each element. For example, the Ar for carbon is 12, and the Ar for magnesium is 24. This means that a magnesium atom has twice the mass of a carbon atom.

Calculating relative formula mass

Relative formula mass is given the symbol Mr. To calculate the Mr for a substance:

work out how many atoms of each element there are in the chemical formula

add together the Ar values for all the atoms of each element present

For example, the formula for carbon dioxide is CO2. It consists of one carbon atom (Ar = 12) and two oxygen atoms (Ar = 16):

Mr of CO2 = 12 + 16 + 16 = 44

It could also be calculated this way:

Mr of CO2 = (1 × 12) + (2 × 16) = 12 + 32 = 44

Ar and Mr values are just numbers. They have no units because they are relative masses.

Relative formula masses of ionic compounds

Ionic compounds such as sodium chloride do not exist as molecules. However, their relative formula masses are calculated in the same way. The formulae used are their empirical formulae.

how much energy has your body used, in joules, if your health device indicates that 450 calories were burned during your workout

Answers

Answer:

Total energy consumed = 1,882.8 joules

Explanation:

Given:

Calories burned = 450 calories

Find:

Total energy consumed

Computation:

1 calorie = 4.184 joules

So,

450 calories = 4.184 × 450

450 calories = 1,882.8 joules

Total energy consumed = 1,882.8 joules

Question number 4..​

Answers

Answer:

I think it's 7089 because that's my answer to your questions

If each geometric shape represents a different type of atom, and atoms that are touching have chemically bonded with each other, which best describes this model? * 1. An element 2. A compound 3. A homogeneous mixture of two compounds 4. A heterogeneous mixture of two compounds 5. A homogeneous mixture of four elements 6. A heterogeneous mixture of four elements

Answers

Answer:

The correct option is;

3. A homogeneous mixture of two compounds

Explanation:

An homogeneous mixture is one where the components of the mixture are evenly dispersed such that the individual components cannot be seen to be isolated and distinguishable and having a constant composition of the constituents

The image displays three atoms (red circle, cyan triangle, and orange rectangle). The red circle appear to be bonded in pairs while the cyan triangles are bonded to the orange rectangles making a total of two compounds

The arrangement of the compounds in the mixture appear to be very evenly distributed to suggest an homogeneous mixture

The visibility of the compounds should be for an illustrative purpose.

Why does science need to.change its view on ideas overtime?

Answers

Explanation:

A scientific idea is an explanation for how something works, or the truth about some aspect of the world, that was figured out using the scientific process. ... Scientific ideas change over time as the evidence improves. The more experiments they do , and the more data they collect, the better the scientific ideas become.

How many molecules of sodium oxide will be created if 275 grams of sodium reacts with excess oxygen? Given the equation: 4Na + O2 -> 2Na2O

Answers

Answer:

3.60 x 10^24 molecules Na2O

Explanation:

Which of the following statements is true? A. Isotopes of the same element have the same number of protons and neutrons. B. Isotopes have the same physical properties as the normal atom but different chemical properties. C. Isotopes have the same chemical properties as the normal atom but different physical properties. D. If an isotope of one element has the same atomic mass as another element, they will have the same properties.

Answers

Answer:

B

Explanation:

Isotopes have the same number of protons but different number of neutrons.

The true statement is,

Isotopes have the same chemical properties as the normal atom but different physical properties.

So, option C is correct one.

What is isotopes?The elements have same number of proton but different number of neutrons.Example: hydrogen, deuterium, tritium

Why isotopes of same elements have different physical properties?

The isotopes have different physical properties like freezing point , mass, melting or boiling point etc because they have different mass number .

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Identify the difference between natural and artificial dyes.

Answers

Answer:

Natural dyes, although pure from chemicals, are often times more expensive than chemical dyes.

Answer: natural dyes is dye that it is anything that grow on earth that haven't been possessed and artificial dye mean that it is good for something in your body or something else

Explanation:i search it up

which of the following is a scientific question about the cuttlefish?

Answers

Answer:

How does the cuddle fish change its colors?

Please tell me if I'm wrong.

What is 9.871 x 10^-3 in standard form? *

Answers

Answer:

0.009871

Explanation:

[tex] 9.871\times 10^{-3} = 0.009871[/tex]

Answer:

.009871

Explanation:

Can some of you guys give me the Hexane combustion equation?​

Answers

Answer:

C6H14 + 13/2O2 -------> 6CO2 + 7H2O

Explanations

combustion means burning with excess oxygen

What element is depicted by the following electron configuration:

(The electron configuration is in the image)




A. None of these
B. Oxygen
C. Chlorine
D. Sulfur

Answers

Explanation:

Your required answer is sulpher.

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Apollo 17 astronauts eugene cernan and harrison schmitt collected the last samples of moon rocks to bring back to earth in 1972 The astronauts took measurements of the moon rocks using three categories not affected by gravity this is because the earth and moon have different forces of gravity which measurement did they not use?



A-Volume
B-Weight
C-Mass
D-Density

Answers

Answer:

The correct answer is B

Explanation:

This question seeks to test the difference between mass and weight.

Mass is a measurement of the amount of matter present in an object. While weight is a measurement of the force of gravity pulling (the mass of) an object. Hence, measuring the weight of the moon rocks in the moon might be a waste since the weight of the object on earth will produce a different value due to the difference in the force of gravity between the earth and the moon.

Answer:

b

Explanation:

an atom Y has atomic number 13. It loses three electrons in order to be stable.

i.) What is the proton number and electron number of the atom

a)before it loses electrons
b) after losing electrons


ii.) name the tyoe of ion formed by the atom when it loses three electrons
Show by illustration​

Answers

(A) proton number= 13 electron =13
(B) proton number=10 electron =10

An atom Y has atomic number 13, so the no. of electrons and protons in it is 13 and after loses it will form cation and no. of electrons will become 10.

What is atomic number?

Atomic number of an atom is equal to the number of electrons or protons present in that atom.

Before loses electrons

Number of protons and electrons in the atom before loses electron is 13, as given atomic number is 13.

After loses 3 electrons

Number of elctrons in the atom is 10 and number of protons is 13, as protons are present in the nucleus.

Name of the ion which is formed by the atom is cation as it bears positive charge on it.

So, number of protons is always same i.e. 13 within the atom and no. of electrons after losing 3 electrons is 10.

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What evidence demonstrates that chlorine in the stratosphere is primarily from man-made chemicals rather than from natural sources such as volcanoes?

Answers

Answer:

The evidence that demonstrated that the Chlorine in the stratosphere is believed to come primarily from CFCs ( Chlorofluorocarbons) rather than from natural sources such as volcanoes was due to the study conducted in which the amount of chlorine in the stratosphere over the past 20 years was measured and it was discovered that there was an increase over the years. This also corresponded with a rise in CFCs over the same period which shows that the chlorine in the stratosphere was from man made chemicals such as chlorofluorocarbons.

Chlorine in the stratosphere is primarily from man-made chemicals rather than from natural sources such as volcanoes is evident as follows;

Discussion;

Most of the chlorine in the stratosphere is there as a result of human activities, as the figure below illustrates.

Many compounds containing chlorine are released at the ground.

Volcanoes can emit large quantities of hydrogen chloride, but this gas is rapidly converted to hydrochloric acid, which dissolves in rain water, ice, and snow and does not reach the stratosphere.

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The following water measurements were made: 18 mL of water were measured with a beaker, 128.7 mL of water were measured in a graduated cylinder and 23.45 mL of water were measured in a buret. All of these water samples were then poured together in one container. What total volume of water should be reported, when significant digits are taken into account?

Answers

Answer:

170 mL

Explanation:

The total volume to be reported should be 170 mL.

According to the significant rule in mathematical operations, final answers are usually reported to reflect the accuracy of the least accurate number.

In this case, the least accurate of all the volumes has zero significant digits after the decimal, hence, the final answer after the mathematical operation should also have no significant digits after the decimal.

           18 + 128.7 + 23.45 = 170.15

Therefore, the total volume to be reported when significant digits are taken into account would be 170 mL.

1. The Tyndall Effect is most useful for distinguishing between: *
a solute and a solvent
O a suspension and a solution
a colloid and a suspension
a colloid and a solution

Answers

Answer:

a colloid and a solution

Explanation:

When solute particles completely dissolve in a solvent, a true solution is formed. The solute particles in this case are so little that they can not be seen with naked eyes. A true solution does not scatter rays of light.

In a false solution, the solute particles are larger than the solute particles in true solutions but are not large enough to be seen with naked eyes. False solutions scatter rays of light. False solutions are also called colloids.

The major difference between a solution and a colloid is that colloids scatter light rays (Tyndall effect) while a true solution does not scatter light rays.

Does the wavelength of light (R.O.Y.G.B.I.V.) affect a plant’s growth?


Answers

Answer:

YES

Explanation:

If we put a plant in a room with an orange light source, then it will grow more efficiently than a plant exposed to other colors.

Yes the wavelength of light (R.O.Y.G.B.I.V.) affect a plant’s growth.

What is wavelength of light ?

The wavelength of light can be defined as the distance between the two successive  troughs of the light wave, and  It is denoted by the Greek letter lambda (λ), simply it can be said as the distance between one crest or trough of one wave and the next wave is known as wavelength.

The Visible Light having wave length ranges from 400 nm to 700 nm and the spectrum of visible light has a number of colors having different wavelengths.

For example, The violet color have the shortest form of wavelength whereas the red color have the longest wavelength, wavelength is inversely proportional to the frequency like  longer the wavelength of the light have lower is the frequency.

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which of the following flouride has the highest lattice energy a)NaF b)KF c)CsF d)LiF

Answers

Answer:

The correct option is;

d) LiF

Explanation:

The Lattice energy of ionic compounds can be calculated using the modified Coulomb's law as follows;

[tex]U = \dfrac{k' \cdot Q_1\cdot Q_2}{r_0}[/tex]

Where;

Q₁ and Q₂ =  The ionic charges

k' = A constant depending on the ionic and valence configuration

r₀ = The distance between the two nucleus

Given the four compounds each of the metallic ions are of the same group (group one) have the same (only one) valence electron, and are combined to the same ion (fluoride ion) such that Q₂, is the same for all compounds, the factor that will influence the lattice energy more will be the r₀

The sizes of the atoms Li, Na, K and Cs increases as arranged as such Li has the least r₀, and therefore LiF the least  lattice energy

From chemistry test online, we have;

The lattice energy of LiF = -1045 kJ/mole

The lattice energy of NaF = -924 kJ/mole

The lattice energy of KF = -822 kJ/mole

The lattice energy of CsF = -737 kJ/mole.

how many carbon atoms are in .650 gram tablet of aspirin (C9H8O4)?​

Answers

Answer:

For example, in a molecule of aspirin, C9H8O4, there are 9 carbon atoms, 8 hydrogen atoms and 4 oxygen atoms. compound.

Explanation:

The carbon atoms are in 0.650 gram tablet of aspirin (C9H8O4) is 3.24 x 10² atoms.

What are atoms?

Atoms are defined as the smallest unit of matter that can be divided without releasing electrically charged particles.

After the Big Bang, the building blocks of matter were generated is known as atoms.

Molar mass of aspirin = 180.2 g

Number of carbon atoms

= 0.650 g x 1 mole aspirin / 180.2 g x 9 / 1 mole aspirin

= 3.24 x 10² atoms

Thus, the carbon atoms are in 0.650 gram tablet of aspirin (C9H8O4) is 3.24 x 10² atoms.

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Two long, parallel wires are separated by a distance of 2.60 cm. The force per unit length that each wire exerts on the other is 4.3010^5 N/m, and the wires repel each other. The current in one wire is 0.520 A.Required:a. What is the current in the second wire? b. Are the two currents in the same direction or in opposite directions? Sam is a young adult who is enrolled in college in the United States. He is taking a broad range of courses, and is passionate about automobiles and motorcycles. He has the capacity to perform tasks that Piaget would deem formal operational; however, he selectively uses his cognitive ability. In which of the following courses is he more likely to perform cognitive tasks that are within formal operations?a. literatureb. small engine repairc. computer-aided designd. psychology and sociology What is 12x-10y=-19 in slope intercept form? What does Levy mean in the following passage from "Back to MyOwn Country," in which she describes the wave of post-WorldWar II immigrants to Britain?TestestTheir ideas, their creativity, and their ways of life havehelped turn this country into a sophisticated multi-culture.This windfall of talent and variety is one of the greatunforeseen benefits to Britain.She believes immigrants have made Britain into an economicsuperpowerBShe believes immigrants have added variety, liveliness, and vigorto Britain's culture. 5. Why is a local government needed? Write two reasons. 7. A sound wave begins traveling through a thin metal rod at one end with a speed that is 15 times the speed of sound in air. If an observer at the other end of the rod hears the sound twice, one from the sound traveling through the rod and one from the sound traveling through the air, with a time delay of 0.12 s, how long is the rod? The speed of sound in air is 343 m/s. A 2.87g sample of carbon reacts with hydrogen to form 3.41g of car fuel. What is the empirical formula of the car fuel? Factor by grouping cd-9d-4c+36 A passenger train traveled 180 miles in the same amount of time it took a freight train to travel 120 miles. The rate of the freight train was 15 miles per hour slower than the rate of the passenger train. Find the rate of the passenger train. 23458+98432 find the sum What does the VSEPR theory describe From a group of 11 people, 4 are randomly selected. What is the probability the 4 oldest people in the group were selected Which of the following pushes thetwo newly formed plant cells apartduring cytokinesi, after which itgets replaced?A. cell wallB. cell barrierC. cell plate WILL MARK BRAINLIEST!!!!20 POINTS!!!!URGENT!!! Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 48% said they decided not to go to college because they could not afford school. Part II: Exercise 6.16 presents the results of a poll where 48% of 331 Americans who decide to not go to college do so because they cannot afford it. #1: Calculate a 90% confidence interval for the proportion of Americans who decide to not go to college because they cannot afford it, and interpret the interval in context. (a) lower bound: ______ (please round to four decimal places) (b) upper bound: _____ (please round to four decimal places) #2: Interpret the confidence interval in context: (A) We can be 90% confident that our confidence interval contains the sample proportion of Americans who choose not to go to college because they cannot afford it (B) 90% of Americans choose not to go to college because they cannot afford it (C) We can be 90% confident that the proportion of Americans who choose not to go to college because they cannot afford it is contained within our confidence interval #3: Suppose we wanted the margin of error for the 90% confidence level to be about 1.5%. How large of a survey would you recommend? (a) A survey should include at least ________ people. HELP ME ASAP I DONT UNDERSTAND solve for x 3x - 4 = 3x - 10 When preparing government-wide financial statements,the modified accrual basis governmental funds are adjusted for all of the following events except? A) Change in current assets and current liabilities from year to year B) Long-term debt related events C) Internal service fund activities D) Interfund activities Aisha saves 2 Dhs on first week of the month of June, 4Dhs on second week of the month, 8 Dhs on third week of the month and so on. What will be her saving at the end of second week of July? What value is being shown by Aisha? Is saving is a good habit? How often do you save money? What are the different ways of saving money? In the 1870s, groups of women began marching from church meetings to nearby saloons. They knelt in prayer on the saloon's floor or on the street to block the entrance. The main reason women did this was to protest gambling in saloons to encourage saloon patrons to buy bibles to encourage people to attend church to protest the drinking of alcohol