Question

How many moles of electrons weight one kilogram?

Solution

Correct option is

 

1 mol of electrons weight

                                                            

or   kg of electrons

≡ 1 mol of electrons 

 

SIMILAR QUESTIONS

Q1

Number of g of oxygen in 32.2 g Na2SO4. 10H2O is

Q2

The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight = 78.4). Then minimum molecular weight of peroxidaseanhydrous enzyme is

Q3

 The percentage of nitrogen in urea is about

Q4

How much of NaOH is required to neutralize 1500 cm3 of 0.1 N HCl? (Na = 23)

Q5

10 dm3 of N2 gas and 10 dm3 of gas X at the same temperature contain the same number of molecules. The gas X is

Q6

The volume of water to be added to 100 cm3 of 0.5 N H2SO4 to get decinormal concentration is

Q7

 

250mL of a sodium carbonate solution contains 2.65 grams of Na2CO3. If 10mL of this solution is diluted to one litre, what is the concentration of the resultant solution?

(mol. wt. of Na2CO3= 106)

Q8

7.5 grams of a gas occupy 5.6 litre of volume at S.T.P The gas is

Q9

An aqueous solution of 6.3 g of oxalic acid dihydrate is made up to 250mL. The volume of 0.1 N NaOH required to completely neutralize 10mL of this solution is 

Q10

Number of atoms in 558.6 g Fe (molar mass Fe = 55.86 g mol–1)is