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solmaris [256]
2 years ago
5

Please help, need answer

Chemistry
1 answer:
defon2 years ago
8 0

I would say the first three. But I'm not 100% sure. I'm truly sorry if it's wrong

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A student observed a chemical reaction in which the mass of the products was measured to be less than the mass of the reactants.
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Which of these is an indication that a chemical reaction has occurred?
nevsk [136]

Formation Of A Gas.

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3 years ago
Transmutation involves -nuclear change -chemical change -both a nuclear and a chemical change -neither a nuclear nor a chemical
SVEN [57.7K]

Answer: Option (a) is the correct answer.

Explanation:

Transmutation involves the conversion of one chemical element into another chemical element. This change occurs when an element or isotope passes through a number of reactions. It is a natural process and happens when there is a radioactive decay.

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3 0
2 years ago
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Metamorphic rocks that melt in a holt fluid can recystallize into a different form of rock
kotykmax [81]
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7 0
2 years ago
What volume would 56.2 mL of gas at 820 mm of Hg occupy at 720 mm of Hg?
Andreyy89

Answer:

49.35  mL

Explanation:

Given: 56.2 mL of gas

To find: volume that 56.2 mL of gas at 820 mm of Hg would occupy at 720 mm of Hg

Solution:

At 820 mm of Hg, volume of gas is 56.2 mL

At 1 mm of Hg, volume of gas is \frac{56.2}{820}

At 720 mm of Hg, volume of gas is \frac{56.2}{820}(720)=49.35\,\,mL

3 0
2 years ago
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