|
A sample of ammonia weighs 3.00 g. What mass of sulphur trioxide contains the same number of molecules as are in 3.00 g ammonia?
|
|
0
|
12128
|
March 19, 2018
|
|
How many moles are present in 4 g of sodium hydroxide?
|
|
0
|
8749
|
March 19, 2018
|
|
Calculate the mass of one atom of hydrogen atom
|
|
0
|
2349
|
March 19, 2018
|
|
Calculate the formula mass of sodium carbonate (Na2CO3.10H2O)
|
|
0
|
12480
|
March 19, 2018
|
|
. Differentiate between the actual mass of a molecule and gram molecular mass
|
|
0
|
5192
|
March 19, 2018
|
|
Which of the following are tri-atomic and tetra-atomic molecules? CH3CL, CaCL2, NH3, PCL3, P2O5, H20, C2H5OH
|
|
0
|
16586
|
March 19, 2018
|
|
Which of the following symbols of elements are incorrect? `
|
|
0
|
720
|
March 19, 2018
|
|
Give an example to show law of conservation of mass applies to physical changes also
|
|
0
|
6868
|
March 19, 2018
|