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Romashka-Z-Leto [24]

4 years ago

8

opposite poles of different magnet will attract each other and light poles or repel each other this is an example of which of th

e following?

1 answer:

Galina-37 [17]4 years ago

4 0

Its an example of the law of domains

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Ice melting, water boiling, lighting a match, grape juice freezing. Which statement describes evidence of a chemical reaction

Elanso [62]

Lighting a match is a chemical reaction

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3 years ago

What is the product of the reaction of an alcohol and a carboxylic acid when heated together

natulia [17]

Answer:

Explanation:

The direct reaction of a carboxylic acid with an amine would be expected to be difficult because the basic amine would deprotonate the carboxylic acid to form a highly unreactive carboxylate. However when the ammonium carboxylate salt is heated to a temperature above 100 C water is driven off and an amide is formed.

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What volume of oxygen gas is needed to completely combust 0.202L of butane (C4H10) gas?

saveliy_v [14]

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look at the file :)

Explanation:

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3 years ago

When an atom gains an electron,what charge does the ion have

irakobra [83]

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if an atom gains an electron, the ion has negetive charge

7 0

4 years ago

Element A has a half-life of 10 days. A scientist measures out 200 g of this substance. After 30 days has passed, the scientist

myrzilka [38]

N=N₀*2^(-t/T)

N₀=200 g
T=10 d
t=30 d

N=200*2^(-30/10)=25 g

25 g will remain

4 0

3 years ago

Read 2 more answers