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2 years ago

Interpret, in terms of atoms and in terms of moles, the supscript in a chemical formula C2H6

Chemistry

1 answer:

tigry1 [53]2 years ago

3 0

Carbon (24.00)(2)+hydrogen(1.01)(6)

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Determine the mass of 2.4 x 10^24 atoms of gold?

Scorpion4ik [409]

Answer:

Mass = 785.9 g

Explanation:

Given data:

Atoms of gold = 2.4 × 10²⁴ atoms

Mass of gold = ?

Solution:

First of all we will convert the number of atoms into moles.

2.4 × 10²⁴ atoms × 1 mol/ 6.02 × 10²³ atoms

number of moles = 3.99 mol

Now we will determine the mass of gold.

Mass = number of moles × molar mass

Mass = 3.99 mol × 196.97 g/mol

Mass = 785.9 g

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2 years ago

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1,645.6 expressed in scientific notation equals?

12345 [234]

1.6456 x 10^3 (ten to the third power)

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3 years ago

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Why is gold found in the pure state in nature?

Shkiper50 [21]

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3 years ago

What is the formula for water

NARA [144]

Answer:

H2O

Explanation:

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2 years ago

The density of a substance is 17.5 g/mL. Determine the volume (in mL) of 63.6 g of this substance.

andreyandreev [35.5K]

Answer:

<h2>volume = 3.63 mL</h2>

Explanation:

The density of a substance can be found by using the formula

<h3> $Density = \frac{mass}{volume}$ </h3>

Since we are finding the volume

Making volume the subject we have

<h3> $volume = \frac{mass}{Density}$ </h3>

From the question

mass = 63.6 g

Density = 17.5 g/mL

Substitute the values into the above formula and solve for the volume

That's

<h3> $volume = \frac{63.6}{17.5}$ </h3>

We have the final answer as

<h3>volume = 3.63 mL</h3>

Hope this helps you

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2 years ago