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Delvig [45]
2 years ago
7

which of these statements best describes the law of conservation of mass A) when a physical or a chemical change occurs, matter

is not created or destroyed B) when a physical or a chemical change occurs, matter is created but not destroyed C) When a physical or a chemical change occurs, matter can be created and destroyed D) when a physical or a chemical change occurs, matter can be created but not destroyed
Chemistry
2 answers:
vampirchik [111]2 years ago
3 0
The statement which best describes the law of conservation of mass is A) when a physical or a chemical change occurs, matter is not created or destroyed. The law states that matter cannot be created or destroyed by ordinary chemical or physical changes, which means that <span>the mass of all the components of a chemical reaction can be measured before and after the change in order prove that the mass is constant. So, keep in mind that </span><span>the mass of participating products is always the same as the mass of all the reactants.</span>
Bess [88]2 years ago
3 0

Answer:

he or she was right the answer is A

i just took the test

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Answer:

Alpha Particle, Beta Particles and Gamma Rays

Explanation:

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2 years ago
A gas occupies 56 L at 73°C. What volume will the gas occupy if the temp. cools to 0°C?
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Answer:

44.2 L

Explanation:

Use Charles Law:

\frac{V1}{T1} =\frac{V2}{T2}

We have all the values except for V₂; this is what we're solving for. Input the values:

\frac{56 L}{346K} =\frac{V2}{273K}   -  make sure that your temperature is in Kelvin

From here, we need to get V₂ by itself. To do this, multiply by 273 on both sides:

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7 0
2 years ago
A certain atom has 11 electrons 8 neutrons and a charge of -1. What is it’s atomic mass
Arlecino [84]

Answer:

20 amu

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Read 2 more answers
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