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grandymaker [24]
3 years ago
15

(08.02 LC)

Chemistry
2 answers:
Varvara68 [4.7K]3 years ago
7 0

Answer:

The correct answer is a both are ratios of amount of solute over the amount of solution.

Explanation:

Molarity of a substance can be defined as the gram equivalent weight of that substance is dissolved in 1000 ml or 1 litre of water.

For example 1(N) NaOH means 40gm NaOH is being dissolved in 1 litre of water

Percent by mass can be defined as how many percent of that substance is dissolved in 100 ml of water.

For example 20% NaOH solution means 20gm NaOH is being dissolved in 100ml of water.

Solnce55 [7]3 years ago
5 0

Answer: They are different units of concentration

Explanation:

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Which historical era was marked the beginnings of European explorations, conquests of the Americas, trans-Atlantic slave trade a
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Answer : Option C) Early modern era


Explanation : The historical era which was marked by the beginnings of European explorations, conquests of the Americas, trans-Atlantic slave trade and the rise of a globally intertwined economy was Early modern era. It was later followed by the medieval period.

8 0
2 years ago
Help me pls its chemistry
saul85 [17]

B to C:-

  • The temperature remains constant from B to C in any time interval .
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8 0
2 years ago
If 156.06 g of propane, C3H8, is burned in excess oxygen, how many grams of water are formed? C3H8 + O2 → CO2 + H2O Select one:
Nastasia [14]

Answer:

The correct option is;

a. 255.0 g

Explanation:

The given information are;

Mass of propane, C₃H₈ in the combustion reaction = 156.06 g

The equation of the combustion reaction is C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

From the balanced chemical equation of the reaction, we have;

One mole of propane, C₃H₈ reacts with five moles oxygen gas, O₂, to form three moles of carbon dioxide, CO₂, and  four moles of water, H₂O

The molar mass of propane gas = 44.1 g/mol

The number of moles, n, of propane gas = Mass of propane gas/(Molar mass of propane gas) = 156.06/44.1 = 3.54 moles

Given that one mole of propane gas produces 4 moles of water molecule (steam) H₂O, 3.54 moles of propane gas will produce 4×3.54 = 14.16 moles of  (steam) H₂O

The mass of one mole of H₂O = 18.01528 g/mol

The mass of 14.16 moles of H₂O = 14.16 × 18.01528 = 255.0 g

The mass of H₂O produced = 255.0 g

3 0
3 years ago
Which if the following numbers in your personal life are exact numbers?
mr_godi [17]

Answer:

I think D

Explanation:

4 0
2 years ago
Classify each of these compounds as a Brønsted-Lowry acid, a Brønsted-Lowry base, or neither.
chubhunter [2.5K]

Answer:

Brønsted-Lowry acid : H2SO4, HF, HNO2

Brønsted-Lowry Base : NH3, C3H7NH2, CH3)3N

Neither : NaBr, CCl4

Explanation:

8 0
3 years ago
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