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Delvig [45]
3 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]3 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]3 years ago
3 0

Answer:

he or she was right the answer is A

i just took the test

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Which solution contains the smallest number of moles of sucrose (c12h22o11, molar mass = 342.30 g/mol)? 2,000 ml of a 5.0 × 10–5
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> 2,000 mL of a 5.0 × 10–5% (w/v) sucrose solution 

5.0 × 10–3 g/mL * 2000 mL * (1 mol / 342.30 g) = 0.0292 mol

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> 2,000 mL of a 5.0 ppm sucrose solution</span>

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Answer:

<span>2,000 mL of a 5.0 ppm sucrose solution</span>

5 0
3 years ago
The volume of 1.20 lol of gas at 61.3 kPa and 25.0 degree Celsius is
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Answer:

V = 48.5 L

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6 0
3 years ago
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Thus, to increase the energy of the emitted electrons, the frequency of the incident light on the metal must be increased.

Learn more about energy of electron here: brainly.com/question/11316046

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8 0
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