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Licemer1 [7]
3 years ago
6

If an object has a mass of 180 g and a density of 6 g/cm^3, what is the volume of the object?

Chemistry
1 answer:
cupoosta [38]3 years ago
5 0

Answer:

<h3>The answer is 30 cm³</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question

mass = 180 g

density = 6 g/cm³

We have

volume =  \frac{180}{6}  \\

We have the final answer as

<h3>30 cm³</h3>

Hope this helps you

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How many moles of magnesium chloride can be formed from 4.86 g of Mg and 21.27 g of Cl2?
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Answer:

Moles of magnesium chloride can be produced are 0.2 moles

Explanation:

The reaction of Mg with Cl2 is:

Mg + Cl₂ → MgCl₂

<em>Where 1 mole of Mg reacts per mole of Cl₂ to produce MgCl₂.</em>

<em />

As the reaction is 1:1, we need to convert the mass of both Mg and Cl₂ to moles. The lower number of moles will determine the moles of MgCl₂ that will be produced:

<em>Moles Mg -Molar mass: 24.3g/mol-:</em>

4.86g * (1mol / 24.3g) = 0.2 moles Mg

<em>Moles Cl₂ -Molar mass: 24.3g/mol-:</em>

21.27g * (1mol / 70.9g) = 0.3 moles Cl₂

As moles of Mg < moles of Cl₂, Mg is limiting reactant and moles of magnesium chloride can be produced are 0.2 moles

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A photon of light possesses 5 x 10^-19 J of energy. Calculate its frequency
saveliy_v [14]

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The frequency of photon is 0.75×10¹⁵ s⁻¹.

Explanation:

Given data:

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E = hf

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