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Slav-nsk [51]
2 years ago
14

5. You have already seen how to calculate the number of moles given the mass of a

Chemistry
1 answer:
Sergio039 [100]2 years ago
8 0

Answer:

The additional information needed is the molarity of the solution.

Explanation:

Molarity is simply defined as the mole of solute per unit litre of the solution. It is represented mathematically as:

Molarity = mole /Volume

Mole = Molarity x Volume

From the simple illustration above,

If the molarity (mol/L or M) of the solution is known and the volume (L) is given, then, we can simply multiply the molarity and the volume together in order to obtain the number of mole in the solution.

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which characteristics of an element can be determined by considering only the element’s specific location on the periodic table?
Nadusha1986 [10]

Answer:

Gas, Solid, or liquid

Explanation:

5 0
3 years ago
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What mass of sodium hydroxide is needed to neutralise 24.5kg of sulfuric acid <br> H2SO4 + N2 = 2NH3
sveticcg [70]

Answer:

23.92 g

Explanation:

Molar mass of H2SO4 = (2×1)+32+(16×4)= 2+32+48= 82g/mol

H2SO4 + 2NaOH ---> Na2SO4 + 2H2O

I mole of H2SO4 = 2 moles of NaOH

24.5/82 = 24.5/82 × 2

= 0.598 moles of NaOH will neutralize

Mass= mole× molar mass

Molar mass of NaOH= 23+16+1 = 40g/mol

Mass= 0.598 × 40 = 23.92g of NaOH

7 0
3 years ago
100 ml is drawn from 0.1 M solution of KCl and added to 900 ml of water. What is the
grandymaker [24]

Answer:

The new concentration will be 0.01 M.

Explanation:

To determine the new concentration we use the following formula.

concentration (1) × volume (1) = concentration (2) × volume (2)

concentration (1) = 0.1 M

volume (1) = 100 mL

concentration (2) = unknown

volume (2) = 100 mL + 900 mL = 1000 mL

concentration (2) = [concentration (1) × volume (1)] / volume (2)

concentration (2) = (0.1 × 100) / 1000 = 0.01 M

3 0
3 years ago
Is gamma rays blocked very easily
Leto [7]
No, since they are the strongest type of ray only elements that are dense can block them.
5 0
3 years ago
Which of the following cycles does not involve living organisms?
Aneli [31]
The correct answer is letter C. Rock Cycle. Living organisms involved in carbon cycle, oxygen cycle, and in nitrogen cycle. These are involved in the air that living organisms are taking in and out.
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