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Diano4ka-milaya [45]
3 years ago
5

The table below shows the number of sub-atomic particles in an atom of magnesium.

Chemistry
1 answer:
Fittoniya [83]3 years ago
7 0

Answer:

24

Explanation:

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Example 1: Crushing a can.

Type of change:

Developmental – May be either planned or emergent; it is first order, or incremental. ...

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3 years ago
Which of the following is not true about chemical changes? a. They form a new substance. b. They can be reversed by physical cha
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Answer: The correct option is b.

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Indicators showing chemical changes are :

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  • Characteristic odor
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What is the function of the cytoplasm?
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Write an expression for the equilibrium constant of each chemical equation: a. SbCl5(g)SbCl5(g) + Cl2(g) b. 2 BrNO(g)2 NO(g) + B
denis-greek [22]

Answer:

See explanation

Explanation:

Step 1: Data given

For the reaction aA + bB ⇆ cC + dD

Kc = [C]^c * [D]^d / [A]^a [B]^b

a. SbCl5(g) ⇄ SbCl3(g) + Cl2(g)

Kc = [Cl2]*[SbCl3] / [SbCl5]

b. 2 BrNO(g) ⇄ 2NO(g) + Br2(g)

Kc = [Br2]*[NO]² / [BrNO]²

c. CH4(g) + 2 H2S(g) ⇄ CS2(g) + 4 H2(g)

Kc = [H2]^41 * [CS2] / [H2S]²*[CH4]

d. 2CO(g) + O2(g) ⇄ 2CO2(g)

Kc =  [CO2]² / [O2][CO]²

6 0
4 years ago
Most of the energy used in the United States comes from
Elenna [48]

Answer:

Energy in the United States comes mostly from fossil fuels: in 2010, data showed that 25% of the nation's energy originates from petroleum, 22% from coal, and 22% from natural gas.

Explanation:

It is really self explanitory

6 0
4 years ago
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