I Will Mark Brainliest !

Please answer all questions as completely as possible showing all work needed. Also don’t forget to include your units

density = mass / volume
d = m / V

2) Calculate the density of a material that has a mass of 52.457 g and a volume of 13.5 cm3.

3) A student finds a rock on the way to school. In the laboratory he determines that the volume of the rock is 22.7 mL, and the mass in 39.943 g. What is the density of the rock?

4) The density of silver is 10.49 g/cm3. If a sample of pure silver has a volume of 12.993 cm3, what is the mass?

5) What is the mass of a 350 cm3 sample of pure silicon with a density of 2.336 g/cm3?

6) Pure gold has a density of 19.32 g/cm3. What volume would a piece of gold have if it has a mass of 318.97 g?

7) The density of lead is 11.342 g/mL. What would be the volume of a 200.0 g sample of this metal?

8) The mass of a toy spoon is 7.5 grams, and its volume is 3.2 mL. What is the density of the toy spoon?

9) A 28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark, from this information, calculate the density of iron.

10) A rectangular block of copper metal weighs 1896 g. The dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper? (Hint: V = l x w x h)

Answer:

The hotness or pungency of chilli is due to presence of a group of compounds called capsaicinoids. Among capsaicinoids, capsaicin and dihydrocapsaicin are present in major quantities, while homocapsaicin, nordihydrocapsaicin and homo-dihydrocapsaicin are present in very small quantities.

The pungency of chillies is due to the presence of certain compounds called capsaicinoids.

Planck's constant =

6.62607004 × 10-34 m2 kg / s

Explanation:

Step by Step explanation

The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency. Wikipedia

Answer:

The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency.

Plancks constant =

6.62607004 × 10-34 m2 kg / s

Answer:

the answer is b im pretty sure

Explanation:

sorry if im wrong

The empirical formula for benzene is CH. The molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex]. The empirical formula is also known as the simplest basic formula.

A molecular formula is indeed a formula derived with molecules that corresponds to the total number of distinct atoms in the molecule of a chemical. A subscript inside a molecular formula denotes the number for each type of atoms in the substance's molecule.

The empirical formula provides the most basic formula for something like a compound, defined by the ratio between subscripts of the formula's smallest entire number of constituents. It is also known as the simplest basic formula. An empirical formula is the formula of a material given with the least integer subscript. The empirical formula for benzene is CH. The molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex].

Therefore, the molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex].

To learn more about molecular formula, here:

https://brainly.com/question/28647690

#SPJ6

Answer:B

Explanation: i got it right

The scientists use weather balloons to measure up to about 100,000 feet of elevation. The correct option is D.

A weather balloon, also known as a sounding balloon, is a balloon that carries instruments aloft to transmit data on atmospheric pressure, temperature, humidity, and wind speed using a small, disposable measuring device known as a radiosonde.

Weather balloons can travel up to 24 miles (39 kilometres) before bursting, and a payload can land (via parachute) up to 75 miles (120 kilometres) away, depending on wind conditions at the launch site.

If the balloon is flexible, it will expand as it rises to lower air pressure altitudes.

To prevent them from popping, weather balloons are only partially filled when released.

Thus, the correct option is D.

For more details regarding weather balloon, visit:

https://brainly.com/question/28083399

#SPJ2

Answer:

Carbon has an ability of catenation which other group IV elements lack.

Explanation:

Catenation is the ability for an element to form multiple bonds with other elements leading rise to long chains of compounds.

An example is organic compounds.

[tex].[/tex]

Answer:

Answer:

2477.6 cm³

Explanation:

Volume = length x width x height

Label in cm³

hi <3

compound are 2(or more) elements combined together

thus your answer will be picture I

hope this helps <3

Answer:

8.3g

Explanation:

d=m/v

m=d*v

m=0.893*9.29

m=8.3g

If the density of carbon tetrachloride is 0.893 g/mL. The mass of the compound will be 8.3 g.

Mass is the quantity of matter. The mass can be calculated by multiplying density with the volume. The evaluation of how close something is packed. As the mass per unit volume, it has that definition.

Volume is the space occupied by the object. The liquid that weighs heavier is denser if you weigh two liquids with similar volumes or amounts. A substance that is less dense than water will float if it is gently introduced to the water's surface.

So the formula will be d = m / v

m = d x v

The density of carbon tetrachloride is 0.893 g/m

The volume of carbon tetrachloride is 9.29 mL

What the mass is?

Putting the value in the formula

m = 0.893  x 9.29 = 8.3g

Thus, the mass of the compound will be 8.3 g.

To learn more about mass, refer to the link:

https://brainly.com/question/14329156

#SPJ2

A mixture can be separated by looking at the physical properties of the components of the mixture.

Since salt is soluble in water, water can be added to the mixture to dissolve the salt.

The bar magnet is now introduced in order to remove the iron filings since they are attracted by a magnet.

The solution is filtered to separate the sand from the salt solution.

Lastly, the salt solution is heated to dryness to drive away the water and obtain the solid salt.

Hence the mixture has been separated into its components using their individual physical properties. Option A is the correct answer.

Learn more: https://brainly.com/question/12160179

Answer:

is it a b c or d

Explanation:

Answer:

Hope this helps.

Explanation:

See the picture. Hope it helps. Sorry if i was incorrect.

The values that determines the number of significant figures in the answer is 3.72

In mathematics and science, a significant figure refers to any figure that contributes to the degree of accuracy of a value that is being measured.

The value having the value having the least number of significant figures in a multiplication determines the number of significant figures in the answer.

In this case, 3.72 has the least number of significant figures hence it determines the number of significant figures in the answer.

Learn more; https://brainly.com/question/13386983

Answer:

3.72

Explanation:

3.72 has the least number of significant figures which means the number of significant figures is the answer.

coal

Which of these can be mined from earth and used as an energy source?

A.Get rid of the waste and extra fluid

B.Ureters

C.Coal

D.Bladder

ans is coal

Answer:

(from largest to smallest), macroscopic, microscopic, submicroscopic.

Explanation:

Explanation:

The correct order of these from largest to smallest is macroscopic, microscopic, and submicroscopic.

Macroscopic is a term used for things that can be easily seen by the eyes. They are of large size. Macroscopic are those items like rubber, mountains, a bottle, etc.

Microscopic items are those items that are minimum in size and can not be seen by eyes. They are seen by using microscopes. They are microorganisms, cells, cell organelle, etc.

Submicroscopic matters are those objects or substances that made up matter. They are present but can not be seen by eyes. They are electrons, protons, etc. so the correct order of them according to largest to smallest is macroscopic, microscopic, and submicroscopic.

Thus, the correct order is macroscopic, microscopic, and submicroscopic.

To learn more about macroscopic, refer to the link:

https://brainly.com/question/17329685

#SPJ2

Answer:  0.885 M

Explanation:  19.4 grams of NaCl is (19.4g/58.55 g/mole) = 0.332 moles of NaCl.  375ml is 0.375 liters.  Molar is moles per liter:  (0.332 moles NaCl/0.375 liters) = 0.885 M

Glucose is a carbohydrate and monosaccharide sugar molecule that is the energy source for organisms. The simplified model of a glucose molecule will show six carbon atoms, six oxygen atoms, and twelve hydrogen atoms.

Glucose is one of the monosaccharide sugar that is the most abundant energy source with a molecular formula of C₆H₁₂O₆. It consists of carbon, hydrogen, and oxygen atoms with a molecular mass of 180.156 g/mol.

It is a sugar-containing aldehydic group with a six-carbon making it aldohexoses. It is found in honey and fruits that are the source of the energy and regulates metabolic and cellular reactions.

Therefore, the molecular structure of glucose contains six carbon, twelve hydrogens, and six oxygen atoms.

Learn more about glucose here:

https://brainly.com/question/2396657

#SPJ2

Answer:

Answer: 1

Explanation: one

Chloric acid is a neutral compound and an oxoacid with strong oxidizing power. In the compound (chloric acid), chlorine has an oxidation number of +5. Thus, option c is correct.

The oxidation number is defined as electrons that are transferred by accepting and donating in a chemical bond formation. They denote the atoms that have gained and donated electrons by the positive and negative states.

As chloric acid is a neutral compound, the equivalent will be zero. The oxidation state of the hydrogen atom is generally taken as 1 and that of oxygen as -2 as it requires two more electrons in its valence shell.

The oxidation number will be estimated as,

HCIO₃ = 0

+1 + x + 3(-2) = 0

+1 + x - 6 = 0

x = + 6 - 1

x = + 5

Therefore, option c. chlorine has a +5 oxidation number in chloric acid.

Learn more about oxidation numbers, here:

https://brainly.com/question/3035498

#SPJ2

Complete Question is attached below

We have that the Chemical is

Salt

From the Question we have options

Salt

Sleep

Sold

Heat

Temperature

Generally among est the options

Salt is the only chemical present as it is made of Sodium and chlorine compound

NaCl joined by an ionic bond

For more information on this visit

https://brainly.com/question/1689737?referrer=searchResults

Answer:

https://www.plps-k12.org/site/handlers/filedownload.ashx?moduleinstanceid=2482&dataid=3257&FileName=Ch%2017%20Electrochemistry%20Practice%20Problems%20I%20-%20key.pdf

Explanation: This is all the answers just go to this link to help is a bunch of pages to help and with answers on them too! Can I get brianliest plz

Explanation:

The chemical reaction that describes the combustion of methane is

[tex]\text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O}[/tex]

We need to convert the mass of methane to moles:

[tex]0.00880\:\text{g} × \dfrac{1\:\text{mol CH}_4}{16.04\:\text{g}}[/tex]

[tex]= 5.49×10^{-4}\:\text{mol CH}_4[/tex]

Now use the molar ratios to determine the amount of oxygen used during the combustion:

[tex]5.49×10^{-4}\:\text{mol CH}_4×\left(\dfrac{2\:\text{mol O}_2}{1\:\text{mol CH}_4}\right)[/tex]

[tex] = 0.00110\:\text{mol O}_2[/tex]

Converting this to grams, we find that the mass of oxygen is

[tex]0.00110\:\text{mol O}_2×\left(\dfrac{15.999\:\text{g O}_2}{1\:\text{mol O}_2}\right)[/tex]

[tex] = 0.0176\:\text{g O}_2[/tex]

Answer:

elements

Explanation:

possibly elements

Answer: A lot of the steps are the same.

Explanation:

Scientific Method

State your question

Do background research

Formulate your hypothesis, identify variables

Design experiment, establish procedure

Test your hypothesis by doing an experiment

Analyze your results and draw conclusions

Communicate results

Steps of The Scientific Method

Engineering Design Process

Define the problem

Do background research

Specify requirements

Create alternative solutions, choose the best one and develop it

Build a prototype

Test and redesign as necessary

Communicate results

Steps of The Engineering Design Process

Answer:

stimulus response

Explanation:

its stimulus response

The intensive properties are useful for identifying a substance because it does not depend upon the amount of substance present in the sample.

The points regarding properties are the following:

Therefore, the correct answer is the A. They do not depend on the amount of substance you have.

Learn more  about intensive properties:

https://brainly.com/question/17651922

Answer: B

Explanation:

The rate law is the mathematical equation that describes how reactant concentration changes as a function of time. A law such as "Rate = k*[A]*[B]" means that, for each liter-equivalent of the reactant(s) A, there are k liters of reactant B. The law also dictates the molarity (and thus partial pressure) for each component in solution.

Answer:

D

Explanation:

The statement that correctly describes the relationship between the volume of a gas and its temperature, in Kelvin, assuming pressure is held constant is "he relationship is directly proportional; as temperature increases, volume increases in the same way."

In mathematics, a direct proportion means that the two variables increase or decrease simultaneously. As one increases the other increases and vice versa.

According to Charles law; the volume of a given mass of gas is directly proportional to its volume at constant pressure.

As a result of this law, the correct statement is option D; The relationship is directly proportional; as temperature increases, volume increases in the same way.

Learn more; https://brainly.com/question/6590381

Complete Question

A pycnometer is a glass apparatus used for accurately determining the density of a liquid. When dry and empty, a certain pycnometer had a mass of 27.056 g. When filled with distilled water at 25.0°C, it weighed 36.773 g. When filled with chloroform (a liquid once used as an anesthetic before its toxic properties were known), the apparatus weighed 41.451 g. At 25.0°C, the density of water is 0.99704 g/mL

-What is the volume of the pycnometer (mL)

We have that the volume of the pycnometer in mL is

[tex]V=9.111mL[/tex]

From the Question we are told that

Pycnometer mass of [tex]m_p=27.056 g.[/tex]

Temperature [tex]T=25 \textdegree[/tex]

Pycnometer filled with distilled water [tex]m_{pf}= 36.773 g[/tex]

Apparatus weighed [tex]w=41.451 g[/tex]

Density of water [tex]\rho= 0.99704 g/mL[/tex]

Generally the equation for Density  is mathematically given as

[tex]\rho=\frac{mass}{Volume}[/tex]

Since pycnometer is filled with water its volume can be defined by the volume of water in it

Therefore

Mass of water Pycnometer filled with distilled water-Pycnometer mass

[tex]M_w=36.773 -27.056\\\\M_w=9.084g[/tex]

Hence

[tex]V=\frac{9.084g}{0.99704 }[/tex]

[tex]V=9.111mL[/tex]

in conclusion

The volume of the Pycnometer in mL is

[tex]V=9.111mL[/tex]

For more information on this visit

https://brainly.com/question/13249201

Answer:

sorry i don't know this question answeer