I don't know.. all of them.. 1.A student performed an experiment to find the number of water molecules associated with theCuSO, x H2O, and obtained the following data. Using the data given, find the number of watermolecules associated with CuSO, x H2O, and also find out the percentage of water in thehydrate.Trial-11.Mass of emptymicro-crucible (grams)16.35642.Mass of micro-crucible +18.3709hydrate (grams)3.Mass of hydrate(grams)4.Mass of micro-crucible +17.6372anhydrate (grams)5.Mass of anhydrate (grams)6.Mass of water(grams)7.Percent composition of water8.Moles of anhydrate9.Moles of water10. Formula of hydratedcompound.(CUSO4 x H,O) All of them!Calculations:a. Mass of hydrate:=[(Mass of micro-crucible + hydrate) - (Mass of empty micro-crucible)]b. Mass of anhydrate: =[(Mass of micro-crucible + anhydrate) - (Mass of empty micro-crucible)]c. Mass of water: =[(Mass of hydrate) - (Mass of anhydrate)]Mass of waterd. Percentage of water in the hydrate (%) =-x100Mass of hydratee. Moles of anhydrate :Mass of anhydrate(g) x Molar mass of anhydrate (g)1 molf. Moles of water :1 molMolar mass of water(g)Mass of water (g) xMoles of waterg. Number of molecules of water(x) =Moles of anhydrate(report this answer in two significant figures)Answer the following:1. The formula for ibuprofen is C13H18O2. How many moles of ibuprofen are present in250.0-mg tablet?2. Given the following molecular formulas, determine the empirical formula of each compound:N,O5, PCl, H,O2, C,H,Cl,.

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1.A student performed an experiment to find the number of water molecules associated with the CuSO, x H,O, and obtained the following data. Using the data given, find the number of water molecules associated with CuSO4 x H,O, and also find out the percentage of water in the hydrate.

1.A student performed an experiment to find the number of water molecules associated with the CuSO, x H,O, and obtained the following data. Using the data given, find the number of water molecules associated with CuSO4 x H,O, and also find out the percentage of water in the hydrate.

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter7: Solutions And Colloids

Section: Chapter Questions

Problem 7.1E

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Question

100%

I don't know.. all of them..

1.A student performed an experiment to find the number of water molecules associated with the
CuSO, x H2O, and obtained the following data. Using the data given, find the number of water
molecules associated with CuSO, x H2O, and also find out the percentage of water in the
hydrate.
Trial-1
1.Mass of empty
micro-crucible (grams)
16.3564
2.Mass of micro-crucible +
18.3709
hydrate (grams)
3.Mass of hydrate(grams)
4.Mass of micro-crucible +
17.6372
anhydrate (grams)
5.Mass of anhydrate (grams)
6.Mass of water
(grams)
7.Percent composition of water
8.Moles of anhydrate
9.Moles of water
10. Formula of hydrated
compound.(CUSO4 x H,O)

All of them!
Calculations:
a. Mass of hydrate:=[(Mass of micro-crucible + hydrate) - (Mass of empty micro-crucible)]
b. Mass of anhydrate: =[(Mass of micro-crucible + anhydrate) - (Mass of empty micro-crucible)]
c. Mass of water: =[(Mass of hydrate) - (Mass of anhydrate)]
Mass of water
d. Percentage of water in the hydrate (%) =
-x100
Mass of hydrate
e. Moles of anhydrate :
Mass of anhydrate(g) x Molar mass of anhydrate (g)
1 mol
f. Moles of water :
1 mol
Molar mass of water(g)
Mass of water (g) x
Moles of water
g. Number of molecules of water(x) =
Moles of anhydrate
(report this answer in two significant figures)
Answer the following:
1. The formula for ibuprofen is C13H18O2. How many moles of ibuprofen are present in
250.0-mg tablet?
2. Given the following molecular formulas, determine the empirical formula of each compound:
N,O5, PCl, H,O2, C,H,Cl,.

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