Which of the following correctly represents 360 g of water? (i) 2 moles of `H_(2)O` ii) 20 moles of water. iii) `6.022 xx 10^(23)` molecules of water. iv) `1.2044 xx 10^(25)` molecules of water.A. (i)B. I and ivC. ii and iiiD. ii and iv

Which of the following correctly represents 360 g of water? (i) 2 mole

1.	Which of the following correctly represents 360 g of water? (i) 2 moles of `H_(2)O` ii) 20 moles of water. iii) `6.022 xx 10^(23)` molecules of water. iv) `1.2044 xx 10^(25)` molecules of water.A. (i)B. I and ivC. ii and iiiD. ii and iv
Answer» Correct Answer - D (d) (ii) `("Mass of water")/("Molar mass of water")` `=((360 g))/((18 g"mol"^(-1)))=20 ` mol (iv) 18 g of water represent molecules `=6.022xx10^(23)` 360 g of water represent molecules `=((6.022xx10^(23)))/((18g)) xx(360g)` `=6.022xx10^(23) xx20 =1.2044xx10^(25)`

Discussion

No Comment Found

Related InterviewSolutions

Calculate the formula unit masses of ZnO, `Na_(2)O, K_(2)CO_(3)`, given atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.
Calculate the formula masses of following compounds : (i) Sodium oxide, `Na_(2)O` (ii) Aluminium oxide, `Al_(2)O_(3)` (Given : Atomic masses : `Na = 23 u , O = 16 u , Al = 27 u`)
(a) Define mole. What are the two things that a mole represents. (b) What weight of each element is present in `1.5` moles of sodium sulphate , `Na_(2)SO_(3)` ? (Atomic masses : `Na = 23 u , C = 12 u , O = 16 u`)
Express each of the following in kilograms a) `5.84 xx 10^(-3)`mg b) `58.34`g c) `0.584`g d) `5.873 xx 10^(-21)`g
Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight. a) Whose container is heavier? b) Whose container has more number of atoms?
What is the SI prefix for each of the following multiples and submultiples of a unit? a) `10^(3)` b) `10^(-1)` c) `10^(-2)` d) `10^(-6)` e) `10^(-9)` f) `10^(-12)`
The visible universe is estimated to contain `10^(22)` stars. How many moles of stars are present in the visible universe?
3.42 g of sucrose are dissolved in 18g of water in a beaker. The number of oxygen atoms in the solution areA. `6.68xx10^(23)`B. `6.09xx10^(22)`C. `6.022xx10^(23)`D. `6.022xx10^(21)`
How many moles of calcium carbonate `(CaCO_(3))` are present in `10 g` of the substance ? `(Ca = 40 u , C = 12 u, O = 16 u)`
What is the number of molecules in 1.5 moles of ammonia ?

Which of the following correctly represents 360 g of water? (i) 2 moles of `H_(2)O` ii) 20 moles of water. iii) `6.022 xx 10^(23)` molecules of water. iv) `1.2044 xx 10^(25)` molecules of water.A. (i)B. I and ivC. ii and iiiD. ii and iv

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment