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The mole concept



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Q1. What are the number of molecules of water in CuSO4?5H2O, if the weight of oxygen in it is 36 grams?

(a) 3.25 X 1023
(b) 5.25 X 1023
(c) 7.52 X 1023
(d) 9.52 X 1023

Q2. What are the number of moles of hydrogen in NH4[Cr(SCN)4(NH3)2] if the weight of nitrogen in it is 49 grams?

(a) 3.5
(b) 5
(c) 7
(d) 10

Q3. What are the number of moles of nitrogen in 274 grams of (NH4)2Ce(NO3)6?

(a) 16
(b) 8
(c) 6
(d) 4

Q4. What are the number of moles of Hydrogen in 158 grams of Ammonium Bicarbonate?

(a) 5
(b) 10
(c) 15
(d) 20

Q5. What are the number of atoms of chlorine in 250.5 grams of Cl2O6?

(a) 1.806 X 1024
(b) 2.408 X 1024
(c) 9.033 X 1023
(d) 6.022 X 1023

Q6. Which of the following has the same number of moles as in 398 grams of CuSO4?

(a) 2 grams of hydrogen
(b) 40 grams of oxygen
(c) 35 grams of nitrogen
(d) 58.5 grams of Sodium chloride

Q7. Calculate the number of moles in 369 grams of CaOCl2?

(a) 1
(b) 2
(c) 3
(d) 4

Q8. Calculate the number of moles in 42 grams of NaHCO3?

(a) 0.5
(b) 1
(c) 1.5
(d) 2

Q9. How many atoms of carbon represent 1.5 mole?

(a) 6.022 X 1023
(b) 1.2044 X 1023
(c) 3.011 X 1023
(d) 9.033 X 1023

Q10. How many grams of NaCl represent 1 mole?

(a) 23
(b) 35.5
(c) 58.5
(d) 69.5


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211 views

Isotopes Of Any Element Have A. Same Atomic Weight But Different Atomic Number.

Modified 139 Year Ago Sanjana

211
Sanjana
139 Year Ago

Isotopes Of Any Element Have A. Same Atomic Weight But Different Atomic Number.

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