Show your work including units in your answer. Calculate the molar mass of Li4OH
1 answer:
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There are 22.5 grams of protein in one cup of soup that has 140 kcal with 8 g of carbohydrate and 2 g of fat.
<h3>What is the mass of a substance?</h3>The mass of a substance is the quantity of the substance that is being measured in grams or kilograms.
To determine the energy from the 8g of carbohydrate, we have:
= 8g × 4 kcal/g (the corresponding calories of food type)
= 32 kcal
The energy from 2g of fat = 2g × 9 kcal/g
= 18 kcal
The energy from protein is calculated as:
= 140 kcal - 32 kcal - 18 kcal
= 90 kcal
The required mass of the protein in grams is:
= 22.5 grams
Therefore, we can conclude that there are 22.5 grams of protein in one cup of soup.
Learn more about the mass of a substance here:
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Answer:
grams of zinc required = 3.24 g
Particles of zinc required =
Explanation:
Given that:-
Mass of hydrogen gas produced = 0.10 g
Calculation of the moles of as:-
Mass = 0.10 g
Molar mass of = 2.016 g/mol
The formula for the calculation of moles is shown below:
Thus,
According to the reaction shown below:-
1 mole of hydrogen gas is produced when 1 mole of zinc reacts
So,
0.0496 mole of hydrogen gas is produced when 0.0496 mole of zinc reacts
Moles of Zinc required = 0.0496 moles
Molar mass of zinc = 65.38 g/mol
mass= Moles*Molar mass =
Also, 1 mole of Zinc contains particles
0.0496 mole of Zinc contains particles
Particles of zinc required =