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brilliants [131]
3 years ago
13

Chemical reactions happen when _____. a.atoms attract or repel one another b.heat is created by friction c. two or more substanc

es are mixed substances are heated or d.cooled
Chemistry
1 answer:
melomori [17]3 years ago
5 0

Answer:

A

Explanation:

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s2008m [1.1K]

Answer:

yes

Explanation:

Usually, it would not affect the crucible, but depending on the temperature of the flame the enamel of the crucible may begin to melt and stick to the metal object being used to handle the crucible. This tiny amount that is melted off can cause very small changes in the original mass of the crucible, which although it is almost unnoticeable it is still there. Therefore, the answer to this question would be yes.

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3 years ago
Which statement is true about the exothermic reaction?
Stells [14]

Answer:

C

Explanation:

The enthalpy of the reactants is greater than that of the products.

7 0
2 years ago
The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How
forsale [732]
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This is because the RAM of C4 is 48.

The RFM of C4H10 is 58. Therefore, 48/58 is carbon in butane.

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3 years ago
Which planet is the smallest and the closest to the Sun?
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Mercury is the smallest and closest plant to the sun
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