3 years ago

Which statement is true for nuclear reactions but not for chemical reactions?

Chemistry

2 answers:

marusya05 [52]3 years ago

5 0

Answer: B. The nuclei of the atoms are changed by the reaction.

Explanation:

IrinaVladis [17]3 years ago

4 0

Answer:maybe C

Explanation:

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Heating a particular ether with HBr yielded a single organic product. Which of the following conclusions can be reached?

saw5 [17]

Only C is correct.

A will produce either an methylbromide + alcohol

B will produce alcohol and alkyl bromide as well

C cyclic ether when reacted with HBr will only produce 1 product which has alcohol group (-OH group) on one end and Bromide group on the other end

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3 years ago

The formation of a solid, also known as a _____, is an indication of a chemical change.

elena-14-01-66 [18.8K]

Answer: precipitate

Explanation: Chemical change is a change in which the chemical composition of the atoms changes. The following changes are seen when chemical reaction takes place:

1) Release or absorption of heat

2) Formation of solid or a precipitate

$2AgNO_3(aq)+BaCl_2(aq)\rightarrow 2AgCl(s)+Ba(NO_3)_2(aq)$

3) Change in color

4) Production of gas

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3 years ago

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Type of reaction in NaOH + KNO3 → NaNO3 + KOH

Lesechka [4]

Answer:

It is a combustion reaction

Explanation:

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3 years ago

Brown bears live in thick forests. Recently, many forests have been cut down to build homes. What will happen to the bears that

nlexa [21]

They will not have a home and will die

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4 years ago

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In the reaction Mg (s) + 2HCl (aq) -> H2 (g) + MgCl2 (aq), how many grams of hydrogen gas will be produced from 300 millilite

d1i1m1o1n [39]

Mg(s) + 2HCl(aq) = H₂(g) + MgCl₂(aq)

v=300 ml=0.3 l
c=4 mol/l

n(HCl)=vc

m(H₂)/M(H₂)=n(HCl)/2

m(H₂)=M(H₂)vc/2

m(H₂)=2.0g/mol·0.3 l · 4mol/l /2 = 1.2 g

1.2 grams of hydrogen gas will be produced

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4 years ago