Question

volume of CO2 obtained at STP by the complete decomposition of 9.85g of BaCO3 is - (At. Wt. of ba = 137)

(a) 2.24 lit (b) 1.135 lit
(c) 0.84 lit (d) 0.56 lit


Please Solve The Answers..
Then I Give You 12 pts...​

Answer 1

Let the three consecutive even numbers be x,x+2 and x+4

Their sum is 96

x+x+2+x+4 = 96

3x+6 = 96

3(x+2) = 96

x+2 = 96/3

x+2 = 32

x = 32-2

x = 30

»x+2 = 30 + 2 = 32

»x+4 = 30 + 4 = 34

Therefore, the three consecutive even numbers are 30,32 and 34.Explanation:

Let the three consecutive even numbers be x,x+2 and x+4

Their sum is 96

x+x+2+x+4 = 96

3x+6 = 96

3(x+2) = 96

x+2 = 96/3

x+2 = 32

x = 32-2

x = 30

»x+2 = 30 + 2 = 32

»x+4 = 30 + 4 = 34

Therefore, the three consecutive even numbers are 30,32 and 34.