3 years ago

Volume and mass examples

1 answer:

5 0

Answer: Example: A bowling ball and a basketball are about the same volume as each other, but the bowling ball has much more mass

Explanation: Mass and volume are two units used to measure objects. Mass is the amount of matter an object contains, while volume is how much space it takes up.

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How many moles are there in 100 grams of Na3PO4?

kondaur [170]

65.2 g x (1 mol/163.9 g) = 0.398 moles of Na3PO4.

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3 years ago

Atoms of two adjacent elements in the third period are in the ground state. An atom of element A has only s electrons in its val

Dennis_Churaev [7]

Answer:

Explanation:

A is Magnesium, B is Aluminium both are adjacent element and lie in third period.

Magnesium with atomic number of 12 consist two s electrons in it's valence shell in ground state whereas, Aluminium which has atomic number of 13 consist three electrons in it's valence shell in the ground state out of which two are s electrons and only one p electron.

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4 years ago

Which product forms from a reaction between beryllium (Be) and arsenic (As)?

Gekata [30.6K]

Answer:

Be3As2

Explanation:

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3 years ago

Convert 4.5 X 1022 molecules of H2O to moles.

noname [10]

Answer:

<h3>The answer is 0.075 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{4.5 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.074750830...$

We have the final answer as

<h3>0.075 moles</h3>

Hope this helps you

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What is the smallest part of a tree that can do all the things needed for life??

nalin [4]

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