07 Percent composition Lab

Last updated almost 5 years ago

29 Nsɛmmisa

Watch this video for bunsen burner basic operation

Look at the data table below and copy into your notebook so that you can record the data as you watch the video

Now watch the video and collect the data to fill in the table.

Now fill in the data table with the corresponding values and perform necessary calculations.

Remember to compare the ratio of moles, you calculate the moles of each substance to be compared. Then you divide by the smaller amount of moles. So determine the moles of the anhydrous salt and the moles of water contained in the sample. Divide by the smaller mole amount. The salt should be the smaller one. If not, there was an error in the procedure.

07 Percent composition Lab

Last updated almost 5 years ago

29 Nsɛmmisa

Watch this video for bunsen burner basic operation

Look at the data table below and copy into your notebook so that you can record the data as you watch the video

Now watch the video and collect the data to fill in the table.

Now fill in the data table with the corresponding values and perform necessary calculations.

Determine the ratio of moles of water to moles of hydrate. (find moles of each, divide both by the smallest number of moles) What number should be in front of the water in the formula CuSO₄• ? H_²O?

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula MgSO₄ • ? H₂O

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula CoCl₂• ? H₂O?

Which compound lost the greatest percent of mass of water?

CoCl₂

CuSO₄

MgSO₄

Did this match what your formulas indicated?

Yes

07 Percent composition Lab

07 Percent composition Lab

Determine the ratio of moles of water to moles of hydrate. (find moles of each, divide both by the smallest number of moles) What number should be in front of the water in the formula CuSO₄• ? H_²O?

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula MgSO₄ • ? H₂O

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula CoCl₂• ? H₂O?

Which compound lost the greatest percent of mass of water?

Did this match what your formulas indicated?

Test tube and CuSO4

Empty test tube

Mass of Hydrate

Test tube and anhydrous salt

Empty test tube mass

Mass of anhydrous salt

Mass of water lost

Percent water

Determine the ratio of moles of water to moles of hydrate. (find moles of each, divide both by the smallest number of moles) What number should be in front of the water in the formula CuSO₄• ? H_²O?

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula MgSO₄ • ? H₂O

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula CoCl₂• ? H₂O?

Which compound lost the greatest percent of mass of water?

Did this match what your formulas indicated?

Test tube and CuSO4

Empty test tube

Mass of Hydrate

Test tube and anhydrous salt

Empty test tube mass

Mass of anhydrous salt

Mass of water lost

Percent water

07 Percent composition Lab

07 Percent composition Lab

Determine the ratio of moles of water to moles of hydrate. (find moles of each, divide both by the smallest number of moles) What number should be in front of the water in the formula CuSO4• ? H2O?

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula MgSO4 • ? H2O

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula CoCl2 • ? H2O?

Which compound lost the greatest percent of mass of water?

Did this match what your formulas indicated?

Test tube and CuSO4

Empty test tube

Mass of Hydrate

Test tube and anhydrous salt

Empty test tube mass

Mass of anhydrous salt

Mass of water lost

Percent water

Determine the ratio of moles of water to moles of hydrate. (find moles of each, divide both by the smallest number of moles) What number should be in front of the water in the formula CuSO4• ? H2O?

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula MgSO4 • ? H2O

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula CoCl2 • ? H2O?

Which compound lost the greatest percent of mass of water?

Did this match what your formulas indicated?

Test tube and CuSO4

Empty test tube

Mass of Hydrate

Test tube and anhydrous salt

Empty test tube mass

Mass of anhydrous salt

Mass of water lost

Percent water

Determine the ratio of moles of water to moles of hydrate. (find moles of each, divide both by the smallest number of moles) What number should be in front of the water in the formula CuSO₄• ? H_²O?

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula MgSO₄ • ? H₂O

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula CoCl₂• ? H₂O?

Determine the ratio of moles of water to moles of hydrate. (find moles of each, divide both by the smallest number of moles) What number should be in front of the water in the formula CuSO₄• ? H_²O?

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula MgSO₄ • ? H₂O

Determine the ratio of moles of water to moles of hydrate. What number should be in front of the water in the formula CoCl₂• ? H₂O?