All categories

2 years ago

Which statements describe the relationship between the area and the bioversity

Chemistry

1 answer:

AveGali [126]2 years ago

3 0

?????????????????????????????????????????

You might be interested in

Two forces that are not equel in size are

satela [25.4K]

Balanced and Unbalanced Forces

3 0

3 years ago

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

How many electrons are their in an atom of chlorine?

astraxan [27]

There are 7 valence electrons in the atom :)

4 0

3 years ago

HEEEEEEEEEEEEEEELLLLLLLLLLLLPPPPPPP!!!!!!! I WILL MARK BRAINLIEST IF YOU HELP!!!!THIS IS DUE SOON!

Hitman42 [59]

Answer:

An ice pack uses friction and the chemicals inside make it mix to make it cold

Explanation:

3 0

3 years ago

What is creation in terms of chemical reactions?

shtirl [24]

Answer:

Products

Explanation:

In a chemical reaction, the atoms and molecules produced by the reaction are called products

7 0

3 years ago