4. (10 Points) Write a single replacement reaction where one of the reactants is

Chemistry

1 answer:

lesya [120]2 years ago

3 0

Answer:

For each balanced reaction, indicate the total number of atoms in the table below. Reaction. Total Number of Atoms. Reactant Side 1 Product Side. (Left).

Explanation:

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What mass of mgf2 is contained in 80.85 g of a 22.4% by mass solution of mgf2 in water?

Aleks [24]

Formula: % by mass = (mass of solute / mass of solution] *100

Data:

mass of solution = 80.85 g

% by mass = 22.4%

Unknown = mass of solute

Solution

% by mass = (mass of solute / mass of solution] *100 = >

mass of solute = % by mass * mass of solution / 100

mass of solute = 22.4 * 80.85 / 100 = 18.11 g

Answer: 18.11 g

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How much energy is released by the decay of 3 grams of 230Th in the following reaction 230 Th - 226Ra + "He (230 Th = 229.9837 g

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