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[Igcse stuff]

all the best to us all writing our last igcse MCQ

 

[Fatima18]

all the best to us all writing our last igcse MCQ

Thanx and u too!

 

[Tanvi Shah]

And number 16 ?

the answer for question 16 is A because the wall of left ventricle is thicker than that of the right...

 

[Shepard97]

the answer for question 16 is A because the wall of left ventricle is thicker than that of the right...

Yup
Right Ventricle is thicker as it needs to pump blood to the body

 

[Munni Kj]

if any one could explain me reversible reactions?
effexts of temperature,pressure and concentration?

 

[Prathmesh Thakkar]

Heya Ppl.!!!! Back to XPC afta a Year...

 

[xTreXx]

I'm really confused with the writers effect in english. Can you help me with this?

 

[Afzal1]

I'm really confused with the writers effect in english. Can you help me with this?

all u need to do is to pick out the words or phrases in the paragraphs which make the passage sound more effective
and explain them how and why the author has used them and to create what sort of an impact ( spooky, horror, etc)
hope it helps

 

[aaaamfa]

need ans for this question as soon as possible...........
Q)Kimiya has four times as many as marbles as Ramneet.If Kimiya gave 18 to Ramneet they would have the same number .How many marbles has each one got?

thanks a lot for your kind help in advance

 

[examkiller]

Hey guys, Im having trouble with moles, especially the pastpaper questions. They seem hard, Any tips.
I did some questions on moles and can you please show me how solve step by step. What to do and what not to do.
question is they want the mole :
1) 50.9 of CuSO4.5H20
2) 9.64g of (NH4)2S04.Fe2(So4)3.24H20 ?
What to do to when brackets and dots etc .. thanks !!
And also any tips to better understand Stoichiometry ?

 

[SIstudy]

function of mucus?

 

[Afzal1]

function of mucus?

to trap the dust particles and bacteria in it so that it does not enter the lungs and it is pushed to the throat
to be removed out

 

[aaaamfa]

A man is 32 years older than his son .ten years ago he was three times as old as his son was then.Find the present age of each?

 

[aaaamfa]

Mahmoud runs to a marker and back in 15 mins.His speed on the way to the marker is 5 m/s and his speed on the way back is 4 m/s Find the distance to the marker?

 

[Tanvi Shah]

need ans for this question as soon as possible...........
Q)Kimiya has four times as many as marbles as Ramneet.If Kimiya gave 18 to Ramneet they would have the same number .How many marbles has each one got?

thanks a lot for your kind help in advance

Let marbles with Ramneet be "x"
Therefore, marbles with Kimiya=4x
4x-18=x+18
3x=36
x=12
So, Ramneet has 12 marbles and Kimiya has 48.

 

[Tanvi Shah]

A man is 32 years older than his son .ten years ago he was three times as old as his son was then.Find the present age of each?

Let the son's age be "x". Therefore, the man is "x+32"
10 years ago...: Son is "x-10" and man is "x+32-10" which equals to "x+12"
3(x-10)=x+12
3x-30=x+12
2x=42
x=21
So, son's present age is 21 years and the man is 53 years old.

 

[examkiller]

Hey guys, Im having trouble with moles, especially the pastpaper questions. They seem hard, Any tips.
I did some questions on moles and can you please show me how solve step by step. What to do and what not to do.
question is they want the mole :
1) 50.9 of CuSO4.5H20
2) 9.64g of (NH4)2S04.Fe2(So4)3.24H20 ?
What to do to when brackets and dots etc .. thanks !!
And also any tips to better understand Stoichiometry ?

 

[Afzal1]

Hey guys, Im having trouble with moles, especially the pastpaper questions. They seem hard, Any tips.
I did some questions on moles and can you please show me how solve step by step. What to do and what not to do.
question is they want the mole :
1) 50.9 of CuSO4.5H20
2) 9.64g of (NH4)2S04.Fe2(So4)3.24H20 ?
What to do to when brackets and dots etc .. thanks !!
And also any tips to better understand Stoichiometry ?

https://www.acceleratedstudynotes.com/2012/02/04/igcse-coordinated-science-stoichiometry/

 

[Afzal1]

check this out

 

[Prathmesh Thakkar]

Sinx+cosx=a then Mod (sinx - cosx )=?