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Elan Coil [88]
2 years ago
12

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

Chemistry
2 answers:
marusya05 [52]2 years ago
5 0

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

Explanation:

IrinaVladis [17]2 years ago
4 0

Answer:maybe C

Explanation:

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What’s the mass of 2.80 mol of ca
Ludmilka [50]

Answer:

112.22 g

Explanation:

mass = no. of moles x atomic mass

From the periodic table, we can see the atomic mass of Ca is 40.078.

Therefore,

mass = 2.80 x 40.078

= 112.22g (corrected to 2 decimal places.)

3 0
3 years ago
The expression 6.020 x 10^23
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Answer:

3

Explanation:

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A helium atom has 2 protons and 2 neutrons.what is the mass number of this atom?
Scrat [10]
4. Just add the protons and neutrons together.
8 0
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What happens when Sulphur dioxide (so2) gas is passed through an acidified solution of hydrogen . sulfide (H₂S) gas : ​
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8 0
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The reaction between nitrogen and hydrogen to produce ammonia is described by the equilibrium reaction:
laiz [17]

Answer:

Explanation:

The formation of ammonia that occurred by the reaction of nitrogen and ammonia is expressed as:

3H_{2(g)} + N_{2(g)} ⇄ 2NH_{3(g)}

where;

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Hydrogen and nitrogen

The product is ammonia.

For the reaction, the equilibrium constant can be expressed as:

K = \dfrac{[product]}{[reactants]}

K = \dfrac{[NH_3]^2}{[N_2]^3[H_2]^3}

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Thus, during when equilibrium is obtained;

Hydrogen, Nitrogen, and Ammonia are present.

8 0
3 years ago
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