johnpaul1101: What is the total volume of the residual gas formed when 20CM^3 of hydrogen is sparked in 15CM^3 of oxygen at a temperature of 150 degrees celcius according to the following equations: 2 moles of hydrogen gas + 1 mole of oxygen gas giving a product of 2 moles of water.
(a) 10CM^3
(b) 15CM^3
(c) 25CM^3
(d) 30CM^3
plz help me out

emmyeuler1: calculus or whatever u call ur name,mass doesnt change,it is constant anywhere...answer is 50g

Oysdam: no need to abuse the guy na,am sure he knws that mass doesnt change,they do set some tricky questions like that

Mr Calculus:
2h2 + O2 = 2h2o
Volume before spark........20cm^3 : 15cm^3 = __
Volume after spark.........20cm^3 : 10cm^3 = 20cm^3
Total volume of residual gas 10cm^3+20cm^3=30cm^3

buzyguy: Anoda1:an object slidez down an inclined plane from an initial height of 30m.itz velocity at the foot of the plane z 20m/s.the percentage of itz initial potential energy wich z dissipated as heat z,a.33.3% b.50% c.60% d.none

oliseh.com:
Which of d following trioxocarbonate (iv) compounds will not decompose
a)CuCO3
b)K2CO3
c)ZnCO3
d)FECO3

oliseh.com:
Which of d following trioxocarbonate (iv) compounds will not decompose
a)CuCO3
b)K2CO3
c)ZnCO3
d)FECO3

oliseh.com:
Which of d following trioxocarbonate (iv) compounds will not decompose
a)CuCO3
b)K2CO3
c)ZnCO3
d)FECO3

oliseh.com:
Which of d following trioxocarbonate (iv) compounds will not decompose
a)CuCO3
b)K2CO3
c)ZnCO3
d)FECO3

Kendzyma: 4 gurusz...when da electronegative differenc btw 2 bonded elements iz zero....dat means ....

abdulkadirbiffo: [color=#990000][/color]B.The question is incomplete we don't know the media in which it wont decompose.

labodinho: @ all,do anyone has postutme PQ for any Uni except O.A.U?? Pls,help me out if u ve.

okorocha22: wats ur course bro?....add me,on 2go 'olise35' make we chat

Tenison96: In the reaction between sodium hydroxide and
sulphuric acid solutions, what volume of 0.5 molar
sodium hydroxide would exactly neutralise 10cm3 of 1.25 molar sulphuric acid? A. 5cm3 B. 10cm3 C. 20cm3 D. 25cm3 E. 50cm3

Mr Calculus: wats ur course bro.........

okorocha22: mbbs..mbbs....u havnt told me urs...
Whatz ur 2go id cos I havent seen ur request.

Mr Calculus: i'll add u bro

Mr Calculus: Plz guys need ur assistance......
40cm3 of dry ammonia gas and 30cm3 of oxygen were mixed and an electrik spark is passed through d mixture.What is the volume of the residual gases?..d ans is 20cm3 i need ur solvings plsss

Mr Calculus: Plz guys need ur assistance......
40cm3 of dry ammonia gas and 30cm3 of oxygen were mixed and an electrik spark is passed through d mixture.What is the volume of the residual gases?..d ans is 20cm3 i need ur solvings plsss

okorocha22: decompositn means heating....so no medium id involved....but ur answa correct sha