# AS Chemistry

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#1
how to solve this question?
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#2
how to solve this?
0
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
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
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#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
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#6
why B is not the correct answer. it is D according to the marking scheme.
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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.
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