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katrin2010 [14]
4 years ago
12

What does the law of conservation say about matter?

Chemistry
1 answer:
vfiekz [6]4 years ago
6 0
The Law of Conservation says that matter cannot be created or destroyed, all matter is re-used. Going into mass here, which does relate, the product's mass will always equal the mass of the reactants. 
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In what type of solution was the human cell placed​
White raven [17]

Answer:

Isotonic Solution.

Explanation:

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4 0
4 years ago
Study the reaction. NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ Which statement about the reaction is correct? A) The reverse reacti
lozanna [386]

Answer:

The forward reaction is an exothermic reaction.

Explanation:

An exothermic reaction is one in which energy is released, usually in the form of heat hence the enthalpy of the reaction is negative. When a reaction exothermic, the energy of the reactants is greater than the energy of the products hence the excess energy is given out as heat. The reactants lie at a higher energy level in the reaction profile compared to the products.

When we look at the reaction given in the question, NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ , we can easily see from the thermochemical reaction that the forward reaction is exothermic, energy is released by the reaction system as evidenced by the negative enthalpy of reaction.

4 0
3 years ago
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MAVERICK [17]

Answer:

its endothermic .

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C. <span>High temperatures make the gas molecules move more quickly.
</span>
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Explanation:

Hope this helps you

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