- Messages
- 1,074
- Reaction score
- 431
- Points
- 93
its B) : 9/18 =14/28Which gas contains the same number of molecules as 9 g of water?
A 2 g of hydrogen
B 14 g of nitrogen
C 32 g of oxygen
D 44 g of carbon dioxide
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
its B) : 9/18 =14/28Which gas contains the same number of molecules as 9 g of water?
A 2 g of hydrogen
B 14 g of nitrogen
C 32 g of oxygen
D 44 g of carbon dioxide
wrong answer!no change
b as .5 moles of nitrogen gasWhich gas contains the same number of molecules as 9 g of water?
A 2 g of hydrogen
B 14 g of nitrogen
C 32 g of oxygen
D 44 g of carbon dioxide
either that or concentrate itwrong answer!
why would it become more concentrated?can u explain that please?either that or concentrate it
because ions from water are being electrolysed so sutomatically it will concentrate i thought first that water produced at anode would be suficent to replace lost water but it is notwhy would it become more concentrated?can u explain that please?
k thanxbecause ions from water are being electrolysed so sutomatically it will concentrate i thought first that water produced at anode would be suficent to replace lost water but it is not
Since there will be no double displacement, for e.g if you chose to react KNO3 with HCl, the H wont be able to displace K nor will the Cl be able to displace NO3 hence no reaction will take place.[/quote
thanku
in titration method reactants are all soluble.i guess coz both the products formed are soluble
e.g
KNO3(aq)+HCl(aq)--->KCl(aq)+HNO3(aq)
KNo3(aq)+AgCl(s)--->KCl(aq)+AgNO3(aq)
its not suitable as we cant seperate them....
(correct me if m wrong)
june 2006 B9(b)..,in examiner report,it is written that KNO3 was wrongly chosen as a reactant..may because to
link fr qstn pls? kite
in titration method reactants are all soluble.
31.B because 20% oxygen present in air is used up.Rest of 80%is left which is 64cm^3.
woww .... that's tough!!The mass of one mole of a chloride formed by a metal Y is 74.5 g.
What is the formula of the chloride?
A Y3Cl
B Y2Cl
C YCl
D YCl 2
Its C.woww .... that's tough!!
umm.... iss this the total answer?? and also the mass is for the salt formed?? or is it for the cloride ions in the salt??
electron flow I guessi want to ask.. that in the conventional curent and the electron flow mcq...which heading was in the table first???
conventional current or electron flow.............
i want to ask.. that in the conventional curent and the electron flow mcq...which heading was in the table first???
conventional current or electron flow.............
actually i want to confirm that what was in the first column.... conventional current or electron flow.....
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now