|
Calculate the number of molecules
|
|
1
|
520
|
November 24, 2016
|
|
Calculate the number of molecules in 4 g of methane
|
|
1
|
6944
|
November 24, 2016
|
|
Convert 12.043 x ${10}^{22}$ molecules of sulphur dioxide into moles
|
|
1
|
2196
|
November 24, 2016
|
|
Convert into mole
|
|
1
|
1020
|
November 24, 2016
|
|
An element Y has a valency of 4
|
|
1
|
2292
|
November 24, 2016
|
|
Calculate the molar mass of $C{{O}_{2}}$
|
|
1
|
609
|
November 24, 2016
|
|
If 12 g of C is burnt in the presence of 32 g of ${{O}_{2}}$
|
|
1
|
524
|
November 24, 2016
|
|
Calculate the molar mass of the following compounds
|
|
1
|
1832
|
November 24, 2016
|
|
Calculate its molecular mass
|
|
1
|
639
|
November 24, 2016
|
|
What is the difference between sodium atom and sodium ion?
|
|
0
|
2772
|
November 24, 2016
|
|
How do molecules exist in a chemical reaction?
|
|
0
|
2028
|
November 24, 2016
|
|
What is the relative atomic mass of an element?
|
|
1
|
765
|
November 24, 2016
|
|
Define atomic mass unit. State how do atoms exist?
|
|
0
|
7723
|
November 24, 2016
|
|
Mention any two important rules for writing a chemical formula
|
|
1
|
2869
|
November 24, 2016
|
|
Give the names of any two elements
|
|
1
|
1179
|
November 24, 2016
|
|
What change would you observe in the overall mass of the content?
|
|
1
|
876
|
November 24, 2016
|
|
Write the Latin names of sodium and iron
|
|
0
|
1745
|
November 24, 2016
|