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harina [27]
3 years ago
13

The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10-8 cm. What is this distance in inche

s?
Chemistry
1 answer:
liq [111]3 years ago
6 0

Answer:

The distance between the centers of the two oxygen atoms in an oxygen molecule is 4.76\times 10^{-9}inch

Explanation:

We know, 1 inch = 2.54 cm

So, 1.21\times 10^{-8}cm=(1.21\times 10^{-8})\times (\frac{1}{2.54})inch

                                              = 4.76\times 10^{-9}inch

So the distance between the centers of the two oxygen atoms in an oxygen molecule is 4.76\times 10^{-9}inch

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A 12.0% sucrose solution by mass has a density of 1.05 gem, what mass of sucrose is present in a 32.0-mL sample of this solution
natulia [17]

Answer:

Option C. 4.03 g

Explanation:

Firstly we analyse data.

12 % by mass, is a sort of concentration. It indicates that in 100 g of SOLUTION, we have 12 g of SOLUTE.

Density is the data that indicates grams of solution in volume of solution.

We need to determine, the volume of solution for the concentration

Density = mass / volume

1.05 g/mL = 100 g / volume

Volume =  100 g / 1.05 g/mL → 95.24 mL

Therefore our 12 g of solute are contained in 95.24 mL

Let's finish this by a rule of three.

95.24 mL contain 12 g of sucrose

Our sample of 32 mL may contain ( 32 . 12) / 95.24 = 4.03 g

7 0
3 years ago
Vinegar contains carbon, hydrogen, and oxygen with percent masses of 40.01% C, 6.70% H, and 53.29% O, respectively. Determine th
kobusy [5.1K]

The empirical formula is = C2H4O2

Molecular formula=C2H4O2

<h3>Calculation of Molecular formula and empirical formula:-</h3>

Vinegar has three elements:

oxygen = 53.29%,

hydrogen = 6.70%,

and carbon = 40.01%.

We can create an equation for the total mass of vinegar with 'a' carbon atom,' b' hydrogen atom, and 'c' oxygen atoms using the molar masses of C, H, and O.

12*a + 1*b + 16*c = 60

We also know that C makes up 24 g/mol, or 40.01 percent, of the overall mass of 60 g/mol.

The formula contains two C atoms because each C atom has a molecular mass of 12 g/mol. You may determine that the formula contains 4 H and 2 O atoms by using the same reasoning for H and O.

The empirical formula is = C2H4O2

Molecular formula= (C2H4O2)n

(4 x 12 + 1 x 4 + 16 x 2)n = 60

(84)n = 60

n=60/84

n=0.71=1

Molecular formula=C2H4O2

Learn more about Molecular and empirical formulas here:-

brainly.com/question/9207476

#SPJ4

3 0
2 years ago
Which of the following will allow measurement of a liquids volume with the greatest precision ?​
Evgesh-ka [11]
I personally think that it’s C.
(i’m sorry if it’s wrong)
6 0
3 years ago
Read 2 more answers
Which of the following correctly explains how air exerts pressure on us?
juin [17]
The answer is A.

The molecules in the air located.......below.
6 0
3 years ago
How many moles is 90.93 grams of aluminum?
Rashid [163]

Answer:

C) 3.37 moles .

Explanation:

Hello,

In this case, considering that the atomic mass of aluminum is 27.0 g/mol, the moles in 90.93 g of aluminum are computed via the following dimensional analysis:

n=90.93 gAl*\frac{1molAl}{27.0gAl} \\\\n=3.37molAl

Thus, answer is C) 3.37 moles .

Best regards.

6 0
4 years ago
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