help!!!Chemistry Geniuses required!!!!!ASAPPPPPP!?

Question

i need answers to these questions please!

1. Research chemists discovered a simple way to reduce the amount of harmful nitrogen oxide in car
exhaust fumes. If a stream of ammonia gas is injected into the hot exhaust, the following reaction
happens:
6NO(g) + 4NH3(g) ® 5N2(g) + 6H2O(g)
a) What are the products of this reaction?
b) How much ammonia, NH3, would be needed to react with 18g of nitrogen oxide, NO?
c) Assume that the average distance travelled by a car is about 19,800km per year, and that the
average car emits 1g of nitrogen oxide per km.
How much ammonia would be needed for one car in a year?
2. a) Balance the following equation:
Fe2O3(s) + ¼CO(g) ® ¼Fe(l) + ¼CO2(g)
b) Iron(III) oxide is reduced to iron in the blast furnace according to the equation completed in
part (a). How much iron(III) oxide is needed to produce 112g of iron?
c) How much iron can be made from 320 tonnes of iron(III) oxide?

And these please:

d) A certain iron ore is impure iron(III) oxide. 320 tonnes of this ore will make 202 tonnes of iron.
What is the percentage purity of the iron ore?
[Hint: You will need to use your answer to part (c).]
3. In a titration experiment, it was found that 25cm3 of 0.1mol/dm3 sodium hydroxide solution was
neutralised by exactly 20cm3 of hydrochloric acid. The concentration of the acid was not known.
a) How many moles of sodium hydroxide were there in the experiment?
[Hints: No need to work out the Mr of NaOH because you know the volume and concentration.
Remember that there are 1000cm3 in 1dm3 – convert volumes to dm3.]
b) The balanced symbol equation for the reaction is: HCl(aq) + NaOH(aq) ® NaCl(aq) +H2O(l)
How many moles of hydrochloric acid were needed to neutralise the sodium hydroxide?
c) What was the concentration of the hydrochloric acid?
[Hint: use your answer to part (b) and the volume of acid given in the question.]

and this last one thank you:

4. In a titration experiment, it was found that 25cm3 of 0.5mol/dm3 sodium hydroxide solution was
neutralised by exactly 31.25cm3 of hydrochloric acid. What was the concentration of the acid?

actually spice fuel im an ENGLISH KID who happens to be going to a GRAMMAR SCHOOL which only accept the smartest students who are in the top 5% of the country and no i haven't learned the mole concept yet

Answer 1

I really want you to do your own work. If the school only accepts the smartest kids then your cheating just wastes a place for some other smart kid.

James just cause he said you need to be a genius doesn't mean you should do his homework for him Little Brother, thought you knew right and wrong in addition to chemistry. Ethics are useful too.

Answer 2

Watching tv is easier but I love reading books more

Answer 3

i think of this could appeal usually to youthful adults. suggestion i could supply is to desirable your writing type. Many books have not got very exciting plots (or extremely hassle-free ones), however the author's writing type is what makes it great. To be straightforward, i don't think of this e book could pastime me, yet basically through fact i'm not into the entire 'extreme-psychological-drama' element. Your tale does have an exciting premise, even with the shown fact that. playstation Who have been the human beings who study it? your friends? those are the worst human beings to pass to for critiquing through fact they gained't provide help to be attentive to what they actually think of. and additionally you seem somewhat boastful, and no person likes boastful writers.

Answer 4

Must have taken u a long time to type the question
I feel they should reduce the max word limit

Answer 5

u honestly are crazy. dint u learn mole concept. those questions would be good to practice for yourself. if u dont do it by yourself how do u expect to learn? american kids...

Answer 6

Are you in the middle of a test or something?

Answer 7

1. a.) N2 and H2O
b.) 6.8g
c.) 7480g

2. a.) Fe2O3(s) + 3CO(g) @ 2Fe(l) + 3CO2(g)
b.) 160g
c.) 224 tonnes

You're on your own for the rest