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3 years ago

What is its molecular formula? Type in the correct number based on the label. CaHb

Chemistry

1 answer:

ehidna [41]3 years ago

3 0

Answer:

1. 4

2.10

Explanation:

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What is the electron configuration of S and Cl?

Alexxx [7]

Answer:

S is [Ne] 3s²3p⁴

Cl is [Ne] 3s² 3p⁵

Explanation:

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3 years ago

What is Metallic bond ?<br>

Stels [109]

What is Metallic bond ?

Metallic bond is a force that holds atoms together in a metallic substance.

4 0

3 years ago

Read 2 more answers

The total mass of the atmosphere is about 5.00 x 1018 kg. How many moles each of air, O2, and CO2 are present in the atmosphere?

n200080 [17]

<u>Answer:</u> The moles of oxygen and carbon dioxide in air is $3.63\times 10^{19}mol$ and $7.18\times 10^{16}mol$ respectively

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of atmosphere = $5.00\times 10^{18}kg=5.00\times 10^{21}g$

Average molar mass of atmosphere = 28.96 g/mol

Putting values in above equation, we get:

$\text{Moles of atmosphere}=\frac{5.00\times 10^{21}g}{28.96g/mol}=1.73\times 10^{20}mol$

We know that:

Percent of oxygen in air = 21 %

Percent of carbon dioxide in air = 0.0415 %

Moles of oxygen in air = $\frac{21}{100}\times 1.73\times 10^{20}=3.63\times 10^{19}mol$

Moles of carbon dioxide in air = $\frac{0.0415}{100}\times 1.73\times 10^{20}=7.18\times 10^{16}mol$

Hence, the moles of oxygen and carbon dioxide in air is $3.63\times 10^{19}mol$ and $7.18\times 10^{16}mol$ respectively

6 0

3 years ago

What is it about the structure of magnesium atoms that makes them react more slowly than calcium atoms?

vovikov84 [41]

Is there any answer so I can answer it

7 0

3 years ago

A type of rock that undergoes changes because of heat and pressure

raketka [301]

Answer:

metamorphic rocks

Explanation:

metamorphic rocks are made from the pressure and heat "metamorphic" comes from greek and it stands for "to change form"

6 0

3 years ago