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anygoal [31]
3 years ago
13

What only sure evidence for a chemical reaction is?

Chemistry
1 answer:
Vera_Pavlovna [14]3 years ago
3 0
Heat because when substances react they produce heat.
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  very unlikely to be found in dirt

Explanation:

That combination has a ratio of ¹⁴N to ¹⁵N of 10:4 = 2.5: 1. The most ¹⁵N enriched natural material has a ratio of ¹⁴N to ¹⁵N on the order of 250 : 1 or higher. The combination shown is very unlikely to be found in dirt.

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3 years ago
CaC2 + 2H2O → C2H2 + Ca(OH)2 If 2.8 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?
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Cac2 is a answer please mark me brainliest

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Steel that is exposed to water and salt rusts quickly. If you were a ship builder, how would you protect your new ship? Explain.
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Cations are formed from the?
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4 0
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How do you get all the amino acids that your body needs to make proteins?
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In order to get all the amino acids that the body needs to produce proteins, one must eat and drink the necessary food containing amino acids. Amino acids are what comprises proteins thus, in order to obtain the average amount of amino acid, make sure that you have an enough intake of foods rich in proteins.
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