Advertisements
Advertisements
Question
The molecular formula of glucose is C6H12O6. Calculate its molecular mass. (Atomic masses : C = 12 u ; H = 1 u ; O = 16 u)
Advertisements
Solution
Given:
Atomic mass of C = 12 u
Atomic mass of H = 1 u
Atomic mass of O = 16 u
Therefore, molecular mass of C6H12O6 can be calculated as follows:
(6 × 12) + (12 × 1) + (6 ×16) = 180
Hence, molecular mass of glucose is 180 u.
APPEARS IN
RELATED QUESTIONS
Calculate the molecular mass of H2.
Calculate the molecular mass of nitric acid, HNO3. (Atomic masses : H = 1 u ; N = 14 u ; O = 16 u)
Calculate the molecular masses of the following compounds :
Hydrogen sulphide, H2S
The mass of one molecule of a substance is 4.65 × 10–23 g. What is its molecular mass ? What could this substance be ?
Calculate the molecular mass of the following:
Mg3N2
Given atomic mass of Cu = 63·5, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32
Calculate the relative molecular masses of the following
(NH4)2 Cr2O7
[At mass : C = 12, H = 1, O = 16, Ci = 35.5, N = 14, Cu = 63.5, S = 32, K = 39, Pt = 195, Ca = 40, P = 31, Mg = 24]
Calculate the weight/mass of 0.25 gram atom of calcium.
Calculate the weight/mass of: `10^22` atoms of carbon
What are ionic and molecular compounds? Give examples.
Calcium carbonate reacts with dilute hydrochloric acid as given below:
\[\ce{CaCO3 + 2HCl -> CaCl2 + H2O + CO2}\]
- What is the mass of 5 moles of calcium carbonate? (Relative molecular mass of calcium carbonate is 100)
- How many moles of HCl will react with 5 moles of calcium carbonate?
- What is the volume of carbon dioxide liberated at S.T.P. at the same time?
