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taurus [48]
3 years ago
8

Who want FREEEEEE Points?????

Chemistry
1 answer:
BartSMP [9]3 years ago
4 0

Answer:

me i need free points because i need help on my math work

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Regular treatment with low dose aspirin is used to help prevent cardiovascular disease. How many aspirin molecules are in
gogolik [260]

The number of molecules of aspirin is 4.01\times 10^{20} molecules

Given:

120. mg of the aspirin

To find:

The molecules of aspirin in 120. mg of aspirin.

Solution

Mass of aspirin = 120. mg

1mg = 0.001 g\\\\120. mg=120.\times 0.001 g=0.120 g

Molar mass of aspirin = 180.158 g/mol

Moles of aspirin == \frac{0.120 g}{180.158 g/mol}=0.000666 mol

According to the mole concept:

1 mole = N_A=6.022\times 10^{23} atoms/molecule/ions

The molecules of aspirin in 0.000666 moles of aspirin:

=0.000666\times 6.022\times 10^{23} molecules\\\\=4.01\times 10^{20} molecules

The number of molecules of aspirin is 4.01\times 10^{20} molecules.

Learn more about the mole concept here:

brainly.com/question/7287712?referrer=searchResults

brainly.com/question/2293005?referrer=searchResults

8 0
2 years ago
Which of the following is an inexhaustible energy resource?
koban [17]
<u />C. Water is an inexhaustible energy resource among these options. Coal, oil, and natural gas we can run of, but for the foreseeable future, there will always be water.
4 0
3 years ago
1. In order to make 1 salad it requires 1 head of lettuce, two tomatoes and three carrots. What would be the coefficients for th
pogonyaev

Answer:

3 salad = 3 lettuce + 6 tomatoes + 9 three carrots

Coefficients: 3, 6, 9

Explanation:

1 salad = 1 lettuce + 2 tomatoes + 3 three carrots

<em>Multiply all the coefficients of 1 salad by 3:</em>

3(1 salad) = 3(1 lettuce + 2 tomatoes + 3 three carrots)

<em>Expand the equation:</em>

3 salad = 3 lettuce + 6 tomatoes + 9 three carrots

5 0
3 years ago
How many grams of hydrogen are necessary to react with 2.85 mol CO
Lynna [10]

CO+2 H2=CH3OH

2.85 mol Co x (2mol H2/1 mol Co)=5.70 mol just concert to grams

5.70 mol H2 x (2 g H2/1 mol H2) =11.40 grams of H2

6 0
3 years ago
A chamber has a pressure of 1.5 atm at a volume of 1.4 L. What is the pressure when the piston compresses the sample
nordsb [41]

Answer:

C.) 3.5 atm

Explanation:

Because you are dealing with pressure and volume, you can use Boyle's Law to help you find the missing variable. The general formula looks like this:

P₁V₁ = P₂V₂

In this formula, "P₁" and "V₁" represent the pressure and volume of the chamber originally. "P₂" and "V₂" represent the final pressure and volume. You have been given the values of all the other variables but "P₂". Therefore, you can plug these values into the formula and simplify to find the final pressure.

P₁ = 1.5 atm

V₁ = 1.4 L

P₂ = ?

V₂ = 0.60 L

P₁V₁ = P₂V₂                                        <---- Boyle's Law formula

(1.5 atm)(1.4 L) = P₂(0.60 L)               <---- Plug in values

2.1 = P₂(0.60 L)                                 <---- Multiply 1.5 and 1.4

3.5 = P₂                                             <----- Divide both sides by 0.60

4 0
2 years ago
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