3 years ago

Which of these represents the release of chemical energy?

Chemistry

2 answers:

Maru [420]3 years ago

7 0

C a toy car running down a ramp

mrs_skeptik [129]3 years ago

3 0

Answer:

Explanation:

burning is key word

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Which of the following devices can measure only atmospheric pressure? A. Pressure gauge B. Barometer C. Tire gauge

Kamila [148]

B.) Barometer

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3 years ago

Is this molecule polar or nonpolar?

lutik1710 [3]

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2 years ago

14.2 grams of Na2SO4 is dissolved in water to make a 2.50 L

Trava [24]

Answer:

0.04 M

Explanation:

Given data:

Mass of Na₂SO₄= 14.2 g

Volume of solution = 2.50 L

Molarity of solution = ?

Solution:

Number of moles of Na₂SO₄:

Number of moles = mass/ molar mass

Number of moles = 14.2 g/ 142.04 g/mol

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Molarity = number of moles of solute / volume of solution in L

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3 years ago

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2 years ago

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