Question

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

Solution

Correct option is

Twice that in 60 g carbon

 

558.5 g Fe = 10 moles

                    

SIMILAR QUESTIONS

Q1

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

Q2

 The percentage of nitrogen in urea is about

Q3

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

Q4

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

Q5

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

Q6

 

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)

Q7

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

Q8

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 

Q9

How many moles of electrons weight one kilogram?

Q10

3 g of an oxide of a metal is converted to chloride completely and it yielded 5 g of chloride. The equivalent weight of the metal is