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vodomira [7]
2 years ago
9

What type of energy does a ball have when it rolls down a hill?

Chemistry
1 answer:
spin [16.1K]2 years ago
5 0
A. Kinetic energy
it is moving
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What is the mass of 5.119 102 molecules of copper sulfate<br> (CuSO4)?
Amiraneli [1.4K]

Answer:

Mass = 135.66 ×10⁻²¹ g

Explanation:

Given data:

Number of molecules of CuSO₄= 5.119×10²

Mass of CuSO₄= ?

Solution:

The given problem will solve by using Avogadro number.

1 mole contain 6.022×10²³ molecules

5.119×10² molecules ×1 mol / 6.022×10²³ molecules

0.85×10⁻²¹ mol

Mass in grams:

Mass = number of moles × molar mass

Mass = 0.85×10⁻²¹ mol × 159.6 g/mol

Mass = 135.66 ×10⁻²¹ g

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I have two solutions. In the first solution, 1.0 moles of sodium chloride is dissolved to make 1.0 liters of solution. In the se
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i not sure but I think yes

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What volume of a 2.5 M NaOH solution is required to make 1 liter of a 0.75 M NaOH
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Lithium peroxide chemical formula ?
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