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Inga [223]
3 years ago
9

Which of the following

Chemistry
1 answer:
AfilCa [17]3 years ago
6 0

Explanation:

Are they're multiple choice

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9. ______________ Consists of the Sun and everything that orbits the Sun
Rudiy27

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9.solar system

10.comet

11.gravity

12.earth and saturn

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Each reation releases or absorbs a very large amount of energy per atom.
mario62 [17]

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chemical and nuclear reaction

Explanation:

4 0
3 years ago
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Which of the following is true of gas?
lesantik [10]

Answer:

Gases mix easily because of their high kinetic energy and low inter-molecular forces.

Explanation:

8 0
3 years ago
Classify the two balanced equations representing two chemical reactions
Zinaida [17]

Single Replacement & Decomposition

<h3>Further explanation</h3>

Given

Two chemical reactions

1. Cl2 + 2NaBr ⇒2NaCl + Br2

2. 2NaCl ⇒2Na + Cl2

Required

Type of reaction

Solution

Equation 1 : A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

General formula :

A + BC ⇒ AC + B

Equation 2 : the decomposition reaction of a compound into its constituent elements or compounds

General formula :

AB ⇒ A + B

4 0
3 years ago
What is the freezing point (in C) of a 1.56 m aqueous solution of CaCl2? (Amount to three decimal points)
Julli [10]
Supposing complete ionization: 
<span>CaCl2 → Ca{2+} + 2 Cl{-} [three ions total] </span>

<span>(1.56 m CaCl2) x (3 mol ions / 1 mol CaCl2) = 4.68 m ions </span>

<span>(1.86 °C/m) x (4.68 m) = 8.70 °C change </span>

<span>0°C - 8.70°C = - 8.70°C</span>
4 0
4 years ago
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