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3 years ago

What is the approximate mass of 72 cm3 of silver, if the density is 10.5 g/cm3?

Chemistry

2 answers:

aleksandrvk [35]3 years ago

6 0

Answer:

To approximate the mass of silver, we use the data on density and the volume of the substance. Density is the mass of a substance over the volume it occupies. This given is 10.5 g/cm3 density and a volume of 25 cm3. We multiply the two to get 262.5 grams of silver.

77julia77 [94]3 years ago

5 0

Answer:

<h3>The answer is 756 g</h3>

Explanation:

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

<h3>mass = Density × volume</h3>

From the question

volume of silver = 72 cm³

density = 10.5 g/cm³

We have

mass = 10.5 × 72

We have the final answer as

Hope this helps you

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How many mols are present in the a sample of silver nitrate which has<br> 5.3x10^24 molecules.

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Answer: 5.3 x 10^24 formula units of silver nitrate is equivalent to 8.8 moles of silver nitrate. Silver nitrate is an ionic compound, therefore, its representative particle is called a "formula unit" instead of molecule. For every mole of a substance, we know that there are 6.022 x 10^23 representative units of that substance. The amount of particles in one mole of substance is called Avogadro's number.

Further Explanation:

We can convert from number of representative particles to moles using the formula:

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Learn More

Learn more about representative particles brainly.com/question/8969313
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Keywords: moles conversion, Avogadro's number

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3 years ago

What is the solution to the problem rounded to the correct number of significant figures? 8.01 × 4.1 = ? A. 32.8 B. 32.84 C. 32.

kicyunya [14]

<u>Answer:</u> The correct option is Option D.

<u>Explanation:</u>

Significant figures are defined as the figures that represent the digits of a number which carry an important contribution to the numerical value, starting with the first non-zero digit. For Example: 105.268 has 6 significant figures because every digit carry its own contribution towards the numerical value.

Whenever there is multiplication, the answer will contain the same number of significant figures as there are in the least precise numerical value.

Significant figures in 8.01 are 3 and that in 4.1 are 2.

So, the answer of these two numerical value will contain 2 significant figures.

$8.01\times 4.1=32.841\approx 33$

Hence, the correct option is Option D.

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