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Serggg [28]
3 years ago
12

WHO FAST CAN YOU ANSWER ATOMS

Chemistry
1 answer:
guajiro [1.7K]3 years ago
8 0
The answer is A, I think ! Sorry if I’m wrong.
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Carbon, hydrogen, and oxygen are always found in what type of molecule?
Snowcat [4.5K]
Carbohydrates, proteins, lipids, and Nucleic Acids.

3 0
3 years ago
____ KClO3-----> ____ KCl + ____O3
djyliett [7]

Answer:

explain what need to be done here pls? what do you need?

Explanation:

6 0
3 years ago
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How many moles of nitrogen, N, are in 62.0 g of nitrous oxide, N2O?​
SSSSS [86.1K]
Answer- the estimated number is 4 moles but it actually is 3.86 moles
Explanation
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8 0
2 years ago
A balloon filled with 1.22 L of gas at 286 K is heated until the
TiliK225 [7]

Answer: 670K

Explanation:

Given that,

Original volume of gas V1 = 1.22 L

Original temperature T1 = 286 K

New volume V2 = 2.86 L

New temperature T2 = ?

Since volume and temperature are involved while pressure is constant, apply the formula for Charles law

V1/T1 = V2/T2

1.22 L/286 K = 2.86 L/ T2

Cross multiply

1.22 L x T2 = 286 K x 2.86 L

1.22T2 = 817.96

Divide both sides by 1.22

1.22T2/1.22 = 817.96/1.22

T2 = 670.459 K (Round to the nearest whole number as 670 K)

Thus, the temperature of the gas is 670 Kelvin

4 0
3 years ago
Calculate the number of moles of caco3 (calcium carbonate, or limestone) in a 20.0g sample of this substance
Brrunno [24]
First calculate for the molar mass of the given formula unit, CaCO₃. This can be done by adding up the product when the number of atom is multiplied to its individual molar mass as shown below.

     molar mass of CaCO₃ = (1 mol Ca)(40 g Ca/mol Ca) + (1 mol C)(12 g of C/1 mol of C) + (3 mols of O)(16 g O/1 mol O) = 100 g/mol of CaCO₃

Then, divide the given amount of substance by the calculated molar mass.
            number of moles = (20 g)(1 mol of CaCO₃/100 g)
             number of moles = 0.2 moles of CaCO₃

<em>Answer: 0.2 moles</em>
6 0
3 years ago
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