All categories

3 years ago

How many molecules are in 20.0 L(liters) of SO2 at STP

Chemistry

1 answer:

Finger [1]3 years ago

4 0

5.4 x 10²³ molecules

Explanation:

Given parameter

Volume of gas = 20L

Condition of reaction = STP

Unknown:

number of molecules

Solution:

The number of molecules of a substance is given by;

Number of molecules = Number of moles x avogadro's constant

Number of moles at stp = $\frac{volume of gas}{22.4}$

Number of moles of SO₂ = $\frac{20}{22.4}$ = 0.893mole

Number of molecules = 0.893 x 6.02 x 10²³ = 5.4 x 10²³ molecules

learn more:

Number of molecules brainly.com/question/10818009

#learnwithBrainly

You might be interested in

Gasoline tanks are usually white or some other light color, like yellow or green. Gasoline tanks are not painted black. Why are

eimsori [14]

It is the first option bc if it absorbed heat it it will pressurize and could explode.

4 0

3 years ago

Read 2 more answers

Choose a Metal to Make Cookware

Ann [662]

Answer:

Explanation:

Your mom bumb it’s b

6 0

3 years ago

Which component is missing from the process of photosynthesis?

lisabon 2012 [21]

I believe the answer is 1-Water :)

3 0

3 years ago

Read 2 more answers

An element has an average atomic mass of 1.008 amu. It consists of two isotopes , one having a mass of 1.007 amu, and one having

dimulka [17.4K]

Answer:

The most abundant isotope is 1.007 amu.

Explanation:

Given data:

Average atomic mass = 1.008 amu

Mass of first isotope = 1.007 amu

Mass of 2nd isotope = 2.014 amu

Most abundant isotope = ?

Solution:

First of all we will set the fraction for both isotopes

X for the isotopes having mass 2.014 amu

1-x for isotopes having mass 1.007 amu

The average atomic mass is 1.008 amu

we will use the following equation,

2.014x + 1.007 (1-x) = 1.008

2.014x + 1.007 - 1.007 x = 1.008

2.014x - 1.007x = 1.008 - 1.007

1.007 x = 0.001

x= 0.001/ 1.007

x= 0.0009

0.0009 × 100 = 0.09 %

0.09 % is abundance of isotope having mass 2.014 amu because we solve the fraction x.

now we will calculate the abundance of second isotope.

(1-x)

1-0.0009 = 0.9991

0.9991 × 100= 99.91%

6 0

3 years ago

Calcium carbonate can be broken

arlik [135]

Answer:

Thermal decomposition

Explanation:

Calcium carbonate can be broken down by heating. The following equation represents this chemical change.

CaCO₃(s) ⇒ CaO(s) + CO₂(g)

The scientific term for this process is thermal decomposition.

Thermal refers to the fact that heat is required.

Decomposition refers to the kind of reaction in which a big substance breaks down into smaller substances.

8 0

3 years ago