Chemistry P1 and P2 today

[HAS MAN]

[

I wrote higher and higher because of the formula Moles = Mass/Mr. I guess this is wrong.

Yeah i wrote the same but unfortunately, it's incorrect

 

[ritx]

The polymer with 3 elements was starch right? What did u guys choose?

 

[HAS MAN]

What was the answer to the mcq that said state, i the given physical state, what is found at bottom of the blast furnace?

 

[ritx]

Calcium silicate in liquid state

 

[ritx]

I remember the first 2 MCQs were B B ?

 

[Saad Mughal]

The NUMBER of Nitrogen atoms was 2 in both the fertilizers. There was NO mass to be be considered anywhere though.

If you consider 100g of urea and ammonium nitrate then the moles of nitrogen qould be unequal. This is what i thought. It's incorrect.
I've gotten 3 mcq's wrong and I think a 2 mark part in theory.

 

[ReN0uNeD De\/!|_]

What was the answer to the mcq that said state, i the given physical state, what is found at bottom of the blast furnace?

CAlcium Silicate..... in Liquid state

 

[ritx]

In the P2 first qs, will they accept CALCIUM as the element reacting with water to make an alkali?

 

[abd1336480007]

there was a mcq , 19th , that said ke wch of these 4 oxides would react . . Oxides wre aluminium,sodium.copper and carbondioxide

 

[ritx]

If you consider 100g of urea and ammonium nitrate then the moles of nitrogen qould be unequal. This is what i thought. It's incorrect.
I've gotten 3 mcq's wrong and I think a 2 mark part in theory.

But what if it's right?

 

[asma tareen]

The NUMBER of Nitrogen atoms was 2 in both the fertilizers. There was NO mass to be be considered anywhere though.

i dint get it

 

[Saad Mughal]

The polymer with 3 elements was starch right? What did u guys choose?

Yeah.

 

[Saad Mughal]

In the P2 first qs, will they accept CALCIUM as the element reacting with water to make an alkali?

Obviously. I wrote the same.

 

[Saad Mughal]

aluminium

and carbon dioxide.

 

[ritx]

Wai

aluminium

t, what was the complete question again?

 

[Saad Mughal]

But what if it's right?

Still, I needed at least, 142/145. I can't get them now.

 

[Saad Mughal]

Wai
t, what was the complete question again?

Which of the following oxides reacts with sodium hydroxide?
Aluminium Oxide
Carbon Dioxide
Copper Oxide
One else.

 

[ReN0uNeD De\/!|_]

If you consider 100g of urea and ammonium nitrate then the moles of nitrogen qould be unequal. This is what i thought. It's incorrect.
I've gotten 3 mcq's wrong and I think a 2 mark part in theory.

i did that question with the Mr if i can remember correctly.... i divided the mass of nitrogen from the total mass of the compound and i got higher than in firt and as the moles were equal in both so i got higher then and equal to...

 

[ritx]

Obviously. I wrote the same.

But hey, calcium hydroxide is a base. I think lithium should have been the correct option, it's an alkali earth metal and reacts readily with water to produce lithium hydroxide that's an alkali. I really hope they accept either calcium or lithium. I chose calcium. :/

 

[HAS MAN]

Yeah it was CO2 and Al2O3