Calculate the mass percent for all components in a solution containing the following. 0.350 kg of water, 5.4 moles of ammonia and 195.0 grams of cobalt (ii) nitrate. (the salt completely dissociates)

% Water = 54.96%% Ammonia = 0.14% % Cobalt (II) Nitrate = 30.62%

Explanation:

To calculate mass percent, first we need to calculate the total mass of the mixture:

Mass Water ⇒ 0.350 kg Water = 350 g waterMass Ammonia⇒We use ammonia's molar mass⇒5.4 mol * 17 g/mol =  91.8 gMass cobalt (II) nitrate ⇒ 195.0 g

Total Mass = Mass Water + Mass Ammonia + Mass Cobalt Nitrate

Total Mass = 350 g+ 91.8 g+ 195 g = 636.8 g

To calculate each component's mass percent, we divide its mass by the total mass and multiply by 100:

% Water ⇒ 350/636.8 * 100% = 54.96%% Ammonia ⇒ 91.8/636.8 * 100% = 0.14% % Cobalt (II) Nitrate ⇒ 195/636.8 * 100% = 30.62%

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