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3 years ago

7

10.0g of calcium carbonate was heated. The mass of calcium oxide left was 5.6g. Calculate the mass of carbon dioxide produced in

the reaction.

1 answer:

jarptica [38.1K]3 years ago

6 0

Hope it cleared your doubt.

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How a cation is formed by an atom?

fenix001 [56]

Answer:

Cations are positively charged atoms and hence we need to make the atom positively charged in order to get a cation

We know that an atom is neutral as a whole, so we have equal number of electrons and protons

since we cannot mess with the number of protons in an atom, we have to do it by altering the number of electrons

If we reduce the amount of electrons in an atom, the net charge will be positive and hence a cation will be formed

4 0

3 years ago

In the laboratory you are asked to make a 0.565 m sodium bromide solution using 315 grams of water. How many grams of sodium bro

Scorpion4ik [409]

Answer : The mass of sodium bromide added should be, 18.3 grams.

Explanation :

Molality : It is defined as the number of moles of solute present in kilograms of solvent.

Formula used :

$Molality=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Mass of solvent}}$

Solute is, NaBr and solvent is, water.

Given:

Molality of NaBr = 0.565 mol/kg

Molar mass of NaBr = 103 g/mole

Mass of water = 315 g

Now put all the given values in the above formula, we get:

$0.565mol/kg=\frac{\text{Mass of NaBr}\times 1000}{103g/mole\times 315g}$

$\text{Mass of NaBr}=18.3g$

Thus, the mass of sodium bromide added should be, 18.3 grams.

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3 years ago

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timama [110]

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Sea water, a solution composed of a variety of salts dissolved in water. the salt is the

luda_lava [24]

In seawater, salt is the solute and water is the solvent.

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3 years ago

Pls help me <br><br> What is the mass in grams of 2.64 mol of sulfur dioxide, SO2?

notsponge [240]

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Hope it helps.

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2 years ago