Calculate the mole ratio of 240 g of calcium and 240 g of magnesium. (Ca = 40 u ; Mg = 24 u)
Mass of calcium = 240g
The molar mass of calcium = 40g
Number of moles in 40g of calcium = 1 mole
Therefore, number of moles in 240g of calcium = 240 / 40 = 6 moles
Mass of magnesium = 240g
Molar mass of magnesium = 24g
Number of moles in 24g of magnesium = 1 mole
Hence, number of moles in 240g of magnesium = 240 / 24 = 10 moles
Therefore, the mole ratio of 240g of calcium to 240g of magnesium is (6/10) or 3:5.
Related Articles
- How many moles of calcium carbonate (CaCO3) are present in 10 g of the substance? (Ca = 40 u ; C = 12 u ; O = 16 u)
- Which of the following pair of elements represents a mole ratio of 1 : 1?(a) 10 g of calcium and 12 g of magnesium(b) 12 g of magnesium and 6 g of carbon(c) 12 g of carbon and 20 g of calcium(d) 20 g of sodium and 20 g of calcium
- How many grams of magnesium will have the same number of atoms as 6 grams of carbon? (Mg = 24 u ; C = 12 u)
- A student wants to have 3.011 × 1023 atoms each of magnesium and carbon elements. For this purpose, he will have to weigh :(a) 24 g of magnesium and 6 g of carbon(b) 12 g of carbon and 24 g of magnesium(c) 20 g of magnesium and 10 g of carbon(d) 12 g of magnesium and 6 g of carbon
- (a) Define 'formula unit' of an ionic compound. What is the formula unit of (i) sodium chloride, and (ii) magnesium chloride ?(b) Calculate he formula masses of the following compounds :(i) Calcium chloride(ii) Sodium carbonate(Given : Atomic masses : Ca = 40 u ; Cl = 35.5 u ; Na = 23 u ; C = 12 u ; O = 16 u)
- Calculate the number of molecules present in a drop of chloroform (CHCl3) weighing 0.0239 g.(Atomic mass : C = 12 u ; H = 1 u ; Cl = 35.5 u)
- Calculate the number of aluminium ions present in 0.051 g of aluminium oxide (Al2O3). (Atomic masses: Al = 27 u; O = 16 u)
- Calculate the mass in grams of 0.17 mole of hydrogen sulphide, H2S.(Atomic masses : H = 1 u, S = 32 u)
- A body is thrown vertically upward with velocity $u$, the greatest height $h$ to which it will rise is,$(a).\ u/g$$(b).\ u^2/2g$$(c).\ u^2/g$$(d).\ u/2g$
- How many moles are represented by 100 g of glucose, C6H12O6 ?(C = 12 u, H = 1 u, O = 16 u)
- Which contains more molecules, 10 g of sulphur dioxide (SO2) or 10 g of oxygen (O2)?(Atomic masses : S = 32 u ; O = 16 u)
- What is the density of a substance of mass $240\ g$ and volume $12\ cm^3$ ?
- (a) What is meant by 'a mole of carbon atoms'?(b) Which has more atoms, 50 g of aluminium or 50 g of iron? Illustrate your answer with the help of calculations.(Atomic masses : Al = 27 u ; Fe = 25 u)
- What mass of nitrogen, N2, will contain the same number of molecules as 1.8 g of water, H2O? (Atomic masses : N = 14 u ; H = 1 u ; O = 16 u)
- Calculate the formula unit masses of ZnO, Na2O, K2C03, given atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies