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Mekhanik [1.2K]
2 years ago
7

What is a reaction called that has heat as a product (gives off heat)?

Chemistry
2 answers:
alex41 [277]2 years ago
8 0

I believe the answer is Exothermic

iren2701 [21]2 years ago
4 0

Exothermic gives off heat while as endothermic takes in heat. :)

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All the conversions have a net value of 1
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I think the correct answer would be the last one.

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If the chemist mistakenly makes 250 mL of solution instead of the 200 mL, what molar concentration of sodium nitrate will the ch
Evgesh-ka [11]

Answer:

0.120M is the concentration of the solution

Explanation:

<em>Assuming the mass of sodium nitrate dissolved was 2.552g</em>

<em />

Molar concentration is an unit of concentration widely used in chemsitry defined as the moles of solute (In this case NaNO3) in 1L of solution.

To find this question we must find the moles of NaNO3 in 2.552g. With this mass and the volume (250mL = 0.250L) we can find molar concentration as follows:

<em>Moles NaNO3 -Molar mass: 84.99g/mol-</em>

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<em>Molar concentration:</em>

0.0300 moles NaNO3 / 0.250L =

<h3>0.120M is the concentration of the solution</h3>
7 0
3 years ago
A steel block has a volume of 0.08 m³ and a density of 7,840 kg/m³. What is the force of gravity acting on the block (the weight
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Given:

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