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slega [8]
3 years ago
8

Which of the three components of the atom has the smallest mass?

Chemistry
1 answer:
Lesechka [4]3 years ago
8 0
Electron has the smallest mass
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The magnetic fields are the reason  why magnets repel and attract. eachother. 
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What is dry ice an example of?
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An aqueous solution is 40.0 % by mass hydrochloric acid, HCl, and has a density of 1.20 g/mL. The mole fraction of hydrochloric
vivado [14]

Answer:

The molar concentration of HCl in the aqueous solution is 0.0131 mol/dm3

Explanation:

To get the molar concentration of a solution we will use the formula:

<em>Molar concentration = mass of HCl/ molar mass of HCl</em>

<em></em>

Mass of HCl in the aqueous solution will be 40% of the total mass of the solution.

We can extract the mass of the solution from its density which is 1.2g/mL

We will further perform our analysis by considering only 1 ml of this aqueous solution.

The mass of the substance present in this solution is 1.2g.

<em>The mass of HCl Present is 40% of 1.2 = 0.48 g.</em>

The molar mass of HCl can be obtained from standard tables or by adding the masses of Hydrogen (1 g) and Chlorine (35.46 g) = 36.46g/mol

Therefore, the molar concentration of HCl in the aqueous solution is 0.48/36.46 = 0.0131 mol/dm3

7 0
3 years ago
2 NaClO3→ 2 NaCl + 3 O2<br><br> How many moles of O2 are produced when 40g of NaCl are formed?
Y_Kistochka [10]

Answer:

75.6

Explanation:

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