HAROONAZIZ99
Badges: 8
Rep:
?
#1
Report Thread starter 3 years ago
#1
how to solve this question?
0
reply
HAROONAZIZ99
Badges: 8
Rep:
?
#2
Report Thread starter 3 years ago
#2
how to solve this?
0
reply
username3249896
Badges: 12
Rep:
?
#3
Report 3 years ago
#3
1 litre contains 18.5mmol
0.1 litre contains 1.85mmol = 1.85 x 180 = 330mg

So 18.5mmol/litre = 330mg/dl
0
reply
AftabGujral
Badges: 10
Rep:
?
#4
Report 3 years ago
#4
1 millimole is one thousandth of a mole.

So, 18.5millimoles = 0.0185 moles.

Therefore, in grams, this is 0.0185 x 180 (molar mass of glucose) = 3.30g.

This is 3300mg

18.5mmol/l = 3300mg/l.

There are 10dl in 1l, so 3300mg/l = 330mg/dl
0
reply
HAROONAZIZ99
Badges: 8
Rep:
?
#5
Report Thread starter 3 years ago
#5
(Original post by BobbJo)
1 litre contains 18.5mmol
0.1 litre contains 1.85mmol = 1.85 x 180 = 330mg

So 18.5mmol/litre = 330mg/dl
thankyou
0
reply
HAROONAZIZ99
Badges: 8
Rep:
?
#6
Report Thread starter 3 years ago
#6
why B is not the correct answer. it is D according to the marking scheme.
0
reply
username3249896
Badges: 12
Rep:
?
#7
Report 3 years ago
#7
(Original post by HAROONAZIZ99)
why B is not the correct answer. it is D according to the marking scheme.
Sulfur has a smaller atomic radius than sulfur because sulfur contains more protons which have a stronger attraction for the electrons. Since they are in the same shell, the shielding effect is the same. Hence the electrons are closer to the nucleus in sulfur. It has a smaller atomic radius

Sulfur ion has a larger ionic radius since it has one more shell than sodium ion.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

What support do you need with your UCAS application?

I need help researching unis (25)
13.16%
I need help researching courses (12)
6.32%
I need help with filling out the application form (9)
4.74%
I need help with my personal statement (79)
41.58%
I need help with understanding how to make my application stand out (47)
24.74%
I need help with something else (let us know in the thread!) (3)
1.58%
I'm feeling confident about my application and don't need any help at the moment (15)
7.89%

Watched Threads

View All