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Mrac [35]
3 years ago
15

En el aire, el oxígeno representa el 21%en volumen.

Chemistry
1 answer:
saw5 [17]3 years ago
8 0
Pregunta en guglu ay te ayudara
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A)from deep within the earth

Explanation:

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3 years ago
Tính thể tích ở điều kiện tiêu chuẩn của một hỗn hợp khí gồm 4,4g CO2 và 3,2g O2. Tính số mol trong 3.10^23 phân tử nước
netineya [11]

https://openstax.org/books/chemistry-2e/pages/3-2-determining-empirical-and-molecular-formulas

Check this

7 0
3 years ago
1.) Calculation: If 9.02 x 1024 particles of vinegar (HC2H3O2)HC2H3O2) are added to 16.5 moles of eggshell (CaCO3) and 6.35 mole
blsea [12.9K]

The theoretical yield of acetate is 2607 g. The actual yield of acetate is 1066.8 g. The percentage yield of acetate is 41%.

If 1 mole of vinegar contains 6.02  x 10^23 particles

x moles of vinegar contains 9.02 x 10^24 particles

x = 1 mole x 9.02 x 10^24 /6.02 x 10^23

x = 15 moles of vinegar

The reaction is as follows;

2HC2H3O2 + CaCO3 -----> Ca(C2H3O2)2 + H2O + CO2

Since 2 moles of vinegar reacts with 1 mole of carbonate

x moles of vinegar reacts with 16.5 moles of carbonate

x =  2 moles x 16.5 moles/ 1 mole

x = 33 moles of vinegar

We can see that the vinegar is the reactant in excess hence the carbonate is the limiting reactant.

Theoretical yield = 16.5 moles x 158 g/mol = 2607 g

Actual yield = 6.35 moles  x 158 g/mol = 1066.8 g

Percent yield = 1066.8 g/2607 g × 100/1

= 41%

Learn more: brainly.com/question/13440572?

7 0
3 years ago
2AI + 3H2SO4 -> Al2(SO4)3 + 3H2
podryga [215]

Answer:

B. 313.8

Explanation:

6 0
3 years ago
What are the three bacterial shapes?
sdas [7]

Answer:

Ans1) Common Shapes of Bacteria

Coccus: spherical or round

Bacillus: rod shaped

Spiral: curve, spiral, or twisted

Ans2) Bacteria are classified into five groups according to their basic shapes:

spherical (cocci),

rod (bacilli),

spiral (spirilla),

comma (vibrios) or corkscrew

(spirochaetes)

8 0
3 years ago
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