Answers
Related Questions
Use the blue slider labeled mass to carefully adjust the mass of the red block until neither sinks nor floats. The block should stay wherever your cursor places it without moving up or down. Next remove the block from the water and put it in the scale. Record its new mass.
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Answer:
4.1 grams
Explanation:
Answer:
4.1
I solve this solution and then i got correct on it so its 4.1 thank you!
A rabbit has a mass of 2kg. What is its weight
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Answer:
weight = Mass × gravity
P= m × g
P=mg
Weight (P) = ? , Mass (m) = 2 kg , gravity (g) = 9.8 m/s²
P= mg
p = 2 × 9.8
P= 19.6 kg.m/s²
P= 19.6 N
I hope I helped you^_^
What is photosynthesis ?
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[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]
What's photosynthesis?[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]
Photosynthesis is the process in which green plants derive their food (nutrients and water) through the capturing of light energy (sunlight) and using it to convert carbon dioxide (CO2) and water (H2O) into oxygen (O2) and other substances (compounds) that are rich in energy. Chlorophyll a green pigment present in plants is used in this process.
__________________
Formula ⟶ [tex]\boxed{\bf\:6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6 + 6O_2} [/tex]
__________________
So, the products of photosynthesis are [tex]\large\boxed{\boxed{\bf\:C_6H_{12}O_6 + 6O_2}}[/tex]
The MSDS for sodium hydroxide gives it a health rating of 3, a flammability rating of 0, and a reactivity rating of 1.
According to the MSDS, which best describes sodium hydroxide?
highly corrosive but not highly flammable
highly reactive and corrosive
highly flammable but not highly corrosive
not highly reactive or corrosive
Answers
Answer:
highly corrosive but not highly flammable
Explanation:
When a chemical has a high, or even a 1, in the health rating, it usually means that the chemical is corrosive or can damage a human in another way.
Answer: highly corrosive but not highly flammable
Explanation: When a chemical has a high, or even a 1, in the health rating, it usually means that the chemical is corrosive or can damage a human in another way.
Correct answers only please
Answers
Answer:
Delta. Aldehyde
Explanation:
Which term best describes the important pieces of information that scientists gather and record during an experiment?
conclusions
data
research
supplies
Answers
Answer:
conclusions i think i am not confirmed
Answer:
b-data
Explanation:
right on the unit test review on edge
brainliest???
What causes the pressure in a gas
Answers
Answer:
gas pressure is caused when gas particles hit with the walls of their container the more often the particles hit with the walls and the faster they are moving when they do this the higher the pressure
Answer:
Name one very important thing that separates the Plant kingdom from all other kingdoms.
Explanation:
13. Find the total number of atoms present in the following molecules. a. 5 H₂O b. Zn Cl₂
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Answer:
A= 15 atoms B= 3
Explanation:
5 x 2 + 5 x 1
3 + 2 x 1
Please help ASAP!!!!!!!!
Answers
Answer:
the correct answer is option B batteries use chemicals to store energy
We have that the statement that remains true about batteries is
"Batteries use chemical to store energy "
Option B
-All battery are able to be recharged that is not correct as some batteries are non rechargeable
-A battery is a device composed of petrochemical cells, that rel sole upon the energy from chemical reactions to give off charge
-A battery is a device that is use to store energy. Therefore Batteries to not conserve energy
Hence the statement that remains true about batteries is
"Batteries use chemical to store energy "
Option B
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What do you know about the corpuscular nature of matter?
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Answer:
It is a simple and clear account of the development of the codpuscular or, as sortie prefer to call it, the electronic, theory, of matter to explain the passage of electricity through metals and gases.
Explanation:
THE present volume is an expansion of six lectures delivered by; Prof. J. J. Thomson in his capacity of professor at: the Royal Institution. It is a simple and clear account of the development of the corpuscular, or, as sortie prefer to call it, the electronic, theory, of matter to explain the passage of electricity through metals and gases. The last two chapters are devoted to consideration of the properties of model atoms built up of corpuscles, and the evidence in favour of the view that the number of the corpuscles in an atom is about the same as its atomic weight in terms of hydrogen.
A student performs an experiment to determine the molar mass of magnesium oxide. The student repeats the experiment five times and collects the following data: 40.220gmol, 40.654gmol, 40.314gmol, 40.165gmol, and 40.554gmol. What is the relative standard deviation (RSD) for this set of data?
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The relative standard deviation for the set of data obtained by the student is 0.470%
The formula for calculating the relative standard deviation is given below as:
Relative standard deviation (RSD) = (S * 100)/x
where S stands for the standard deviation and x is the mean of the data set.
The following are the steps to calculate to determine the relative standard deviation using the given formula:
Step 1: Calculate the mean of the numbers in the data set.
mean, x = sum of numbers / number of numbers
(40.220 + 40.654 + 40.314 + 40.165 + 40.554)/5
mean = 40.381 g/mol
Step 2: Subtract the mean from each number in the data to determine the deviation for each number and then square the deviations.
(40.220 - 40.381)² = 0.0259
(40.654 - 40.381)² = 0.0745
(40.314 - 40.381)² = 0.00449
(40.165 - 40.381)² = 0.0466
(40.554 -40.381)² = 0.0299
Step 3: Sum the squared deviations.
0.0259 + 0.0745 + 0.00449 + 0.0466 + 0.0299 = 0.181
Step 4: Determine the variance by dividing the sum of the squared deviations by the total number of values.
Variance = 0.181/5 = 0.0362
Step 6: Determine the standard deviation of the data by taking square root of the variance.
Standard deviation, S = √0.0362 = 0.190
Step 7: Determine the relative standard deviation by inserting the values in the formula, (RSD) = (S * 100)/x
RSD = (0.190 * 100)/40.381
RSD = 0.470%
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Difference between hydrocarbons and organic compounds
Answers
Answer:
hydrocarbons contain both Hydrogen and Carbon while organic compounds
are compounds in which one or more atoms of Carbon are covalently linked
with other elements
Explanation:
Please mark me as brainiest
which term best describes the role of hydrogen gas in the formation of a water molecule
Answers
Each element is defined by its number of its
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Each element is defined by its number of protons.
The distance of 24 km equals:
O 2.4x104 m
O 2.4x10-1 m
O 2.4x103 m
2.4x10-2 m
2.4x102 m
Answers
Answer:
2.4* 10⁴ m
Explanation:
1km = 1000m = 10³m
(1*24)km = 10³ * 24 m
=> 24km = 2.4 * 10⁴m
Please help ASAP!!!!!!!
Answers
Answer:
Chemists develop safer and more effective fertilizers and pesticides .Chemists develop more productive and safer crops .Explanation:
Agriculture means food producingSubstance A is a gas, Substance B is a liquid and Substance C is a solid. All of the substances are at the same temperature and pressure. Which of the following shows the correct relationship of the strength of the intermolecular forces in each substance?
Answers
Answer:C
Explanation:
how many grams are in one mole of CH3CO2H ?
Answers
Answer: 60.2g
Explanation:
One mole acetic acid weighs 60.2g
20,000 $ give a way but answer this first
Plz
12.Write the basis of naming of the following elements. 1.Neptunium,2.Mendelevium,
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Answer:juhygjdkeExplanation:
Mendelevium is named for Dmitri Mendeleev who produced one of the first periodic tables.
Abelson first found neptunium in 1940 after uranium had been bombarded by neutrons from the cyclotron at Berkeley, California. ... The element was named after the planet Neptune, which is the first planet beyond Uranus.
Answer in explanation
Explanation:
neptunium was named after the discovery of the planet neptune in september 23 1846
mendelevium was named as dimitri mendeleev
How does a hypothesis differ from a scientific theory? (1 point)
O Hypotheses can change with new evidence, but theories remain constant.
O Theories always lead to the development of new scientific ideas.
o Hypotheses are testable, while theories only exist conditionally.
o Theories are well established with lots of evidence to support their claims.
Answers
Answer:
the answer is actually D. (theories are well established with lots of evidence to support their claims)
Explanation:
i just took the quiz
A hypothesis is a presented reason for a phenomenon based on limited proof and evidence. A scientific theory is an elucidation of an element that has been constantly experimented with and confirmed per scientific approach.
Theories are well established with lots of proof to back their assertions.
What is the difference between the theory and hypothesis?Scientific theories are established based on the evidence and repetitive experimental procedures to prove and establish them correctly.Theories can change over time as new supporting evidence are found or new procedures are established to amend the old theory.A scientific theory recapitulates a hypothesis that has been reinforced with repeated experiments and observations.A hypothesis should be an instinctive justification or the potential correlation that lies between several phenomena and depends on the scientific theory.Therefore, option D is correct.
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Why is it important to use chemicals of high quality (purity) and exact(correct) concentrations in experiments?
Answers
Answer:
To produce good or targeted result
It is important to use chemicals of high quality and correct concentrations in experiment so that we can obtain the predictable result in an experiment
Purity of substances/chemicals is very important when performing experiments in the laboratories, because it plays an important role in the determination of the chemical properties of substances which will have a direct effect on the result obtained from the experiment. likewise using the correct concentration of reagents
During experiments to obtain the best/predictable result in an experiment it is of best practice to make use of chemicals of high quality and also at the exact(needed) concentrations, that way the predictable result of the experiment will be obtained.
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3.
Carlos is trying to figure out the best place to put his router in order to get the best
signal. Which is not an independent variable?
A. Distance from the router
B. Signal strength at the computer
OUTPU
C. The number of walls between the router and computer
STATIO
D. The number of devices on the router
Answers
Answer:
right answer is option no c
what starting material with these reagents iwll result in this product 1.nanh2 2.ch3ch2br 3.h2, lindlar's cat.
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Explanati la materia el convino
es carbón ya irogno
ed
trong chuẩn độ, dung dịch có nồng độ chưa biết là định nghĩa của?
Answers
Answer:
skip it please, ok...? thank you
HELPPP!!!
11) An international set of units which are used in Science and based on the Decimal System A. Basic Units
B. Derived Units
C. Metric (SI) Units
D. English (Common) Units
E. Random Errors
12) Standard units that can actually be measured with an instrument or device
A. Basic Units
B. Derived Units
C. Metric (SI) Units
D. English (Common) Units
E. Random Errors
13) An older system of units, still used in USA for commerce and construction
A. Basic Units
B. Derived Units
C. Metric (SI) Units
D. English (Common) Units
E. Random Errors
14) Mistakes due to carelessness or lack of verification
A. Basic Units
B. Derived Units
C. Metric (SI) Units
D. English (Common) Units
E. Random Errors
15) units that must be calculated from measured values
A. Basic Units
B. Derived Units
C. Metric (SI) Units
D. English (Common) Units
E. Random Errors
Answers
Answer:
11. A
12. B
13. D
14. E
15. C
89. The element bromine at room temperature is a liquid with a
density of 3.12 g/mL. Calculate the mass of 125 mL of bro-
mine. What volume does 85.0 g of bromine occupy?
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The mass of 125 mL of bromine and the volume occupied by 85 g of bromine are:
1. The mass of bromine is 390 g. 2. The volume of bromine is 27.24 mL.Density is simply defined as the mass of an object per unit volume of the object. It can be expressed mathematically as
[tex]Density = \frac{mass}{volume }[/tex]
1. Determination of the mass of bromineDensity = 3.12 g/mL
Volume = 125 mL
Mass =?[tex]Density = \frac{mass}{volume} \\\\3.12 = \frac{mass}{125}[/tex]
Cross multiply
Mass = 3.12 × 125
Mass = 390 gTherefore, the mass of bromine is 390 g
2. Determination of the volume of bromineDensity = 3.12 g/mL
Mass = 85 g
Volume =?[tex]Density = \frac{mass}{volume } \\\\3.12 = \frac{85}{volume }[/tex]
Cross multiply
3.12 × Volume = 85
Divide both side by 3.12
[tex]Volume = \frac{85}{3.12}\\\\[/tex]
Volume = 27.24 mLTherefore, the Volume of bromine is 27.24 mL
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What is the most stable element in the universe (in terms of binding energy)?
A. uranium
B. gold
C. iron
D. hydrogen
E. helium
F. lead
G. water
Answers
Answer:
C).Iron
Explanation:
Iron has a binding energy of 8.8MeV
What is the Molality of a solution prepared by dissolving 84.7 g of KMnO4 (potassium permanganate, an oxidizing agent) in 165 g of water?
a) 0.513 m
b) 11.3 m
c) 0.308 m
d) 3.25 m
e) 0.958 m
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Give reasons ,Argon is an inert gas.
Answers
Answer:
The outermost (valence) shell of argon has eight electrons, making it exceedingly stable and, thus, chemically inert. Argon atoms do not combine with one another; nor have they been observed to combine chemically with atoms of any other element.So argon is an inert gas
Answer:
because argon have 8 electrons in there outmost shell
which is enough to make it stable
what is a characteristic of matter that allows it to change to something new? THE CORRECT ANSWER GETS BRAINLIEST!!!!
Answers
Answer:
a chemical property
Explanation:
