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# Can someone please help with this problem xx watch

1. 500g of an ointment containing 12.5%w/v of emulsifying wax is prepared. The weight of emulsifying wax in 280g of ointment is:
A.9.6g B.220g C.26.8g D.29.0g E.35.0g
2. What are your thoughts?
3. (Original post by Zacken)
What are your thoughts?
I somehow get 7g I don't know what I'm doing wrong, I'm awful at maths sorry!
4. (Original post by icantdothemaths)
500g of an ointment containing 12.5%w/v of emulsifying wax is prepared. The weight of emulsifying wax in 280g of ointment is:
A.9.6g B.220g C.26.8g D.29.0g E.35.0g
100=100%
50=50%=0.5=
25=25%=0.25=
12.5=12.5%=12.5=
(Original post by Zacken)
What are your thoughts?
Spoiler:
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lol
5. 280/100=2.8 (so 1% is 2.8 grams)

2.8 x 12.5=35 (so 12.5% is 35 grams)

6. (Original post by icantdothemaths)
I somehow get 7g I don't know what I'm doing wrong, I'm awful at maths sorry!
(Original post by bilbomi)
280/100=2.8

2.8 x 12.5=35

or do 280/8 which goes straight to 35
7. (Original post by thefatone)
or do 280/8 which goes straight to 35
Thanks guys can someone explain why you do these methods. Like I said I am awful at maths!
8. (Original post by thefatone)
or do 280/8 which goes straight to 35
Ah yeah nice, I didn't think of doing that
9. (Original post by thefatone)
100=100%
50=50%=0.5=
25=25%=0.25=
12.5=12.5%=12.5=
(Original post by icantdothemaths)
Thanks guys can someone explain why you do these methods. Like I said I am awful at maths!
^^ look 12.5% of the wax is in the ointment so 12.5% of the wax in the 280g ointment is what you need to work out
10. (Original post by bilbomi)
Ah yeah nice, I didn't think of doing that
Is that because 12.5% is 1/8. So 280/8= 35
11. (Original post by icantdothemaths)
Thanks guys can someone explain why you do these methods. Like I said I am awful at maths!
100/12.5 is 8, so you know that 12.5 is one eighth of 100%

This means you can divide your value of 280 by 8 to get the right amount of grams

Hopefully that makes sense, and btw don't tell yourself you're bad at maths! We all have the ability to do well!
12. (Original post by thefatone)
^^ look 12.5% of the wax is in the ointment so 12.5% of the wax in the 280g ointment is what you need to work out
Yeah I get it now.

I suppose you could also multiply 0.125 by 280 to get the same answer as well

Thanks for all your help.
13. (Original post by icantdothemaths)
Yeah I get it now.

I suppose you could also multiply 0.125 by 280 to get the same answer as well

Thanks for all your help.
yup
14. (Original post by thefatone)
yup
I have a syringe driver question, you seem to be good at maths!

15. Asyringe driver contains 15ml diamorphine hydrochloride 4mg/ml solution. Thelength of the syringe driver is 60mm. What rate should the syringe driver beset at, so that the patient receives 5mg/h of diamorphine hydrochloride?A. 3mm/hB. 4mm/hC. 5mm/hD. 6mm/hE. 7mm/h\�rc�

My thoughts are that:
There are 15ml in 60mm
4mgX15= 60mg
60mg=60mm
1mg/1mm
Thus 5mm/h
15. (Original post by icantdothemaths)
I have a syringe driver question, you seem to be good at maths!

15. Asyringe driver contains 15ml diamorphine hydrochloride 4mg/ml solution. Thelength of the syringe driver is 60mm. What rate should the syringe driver beset at, so that the patient receives 5mg/h of diamorphine hydrochloride?A. 3mm/hB. 4mm/hC. 5mm/hD. 6mm/hE. 7mm/h\�rc�

My thoughts are that:
There are 15ml in 60mm
4mgX15= 60mg
60mg=60mm
1mg/1mm
Thus 5mm/h
yes in total there's 60milli grams
since the syringe is 60mm long and you have in total 60 mg of the stuff then 1mg can = 1mm
since this is the case then all you need to do is say 5mg/hour which is what you put so i'm assuming that's correct
Spoiler:
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he knows :O
16. (Original post by thefatone)
yes in total there's 60milli grams
since the syringe is 60mm long and you have in total 60 mg of the stuff then 1mg can = 1mm
since this is the case then all you need to do is say 5mg/hour which is what you put so i'm assuming that's correct
Spoiler:
Show

he knows :O
Don't know where to start with that one!
17. (Original post by Zacken)
What are your thoughts?
Could you help me with this one please, I don't know where to even start!

A patient weighing 80 kg is prescribed amiodarone5mg/kg to be administered over 120 minutes. Choose the most suitablepreparation and flow rate for this prescription from the options below:

A 10mL of amiodarone injection (30mg/mL) added to 500mL glucose 5% and administeredat a flow rate of 170 mL per hour
B 6mL of amiodarone sterile concentrate added to 500 mL sodium chloride 0.9% andadministered at a flow rate of 253 mL per hour
C8mL of amiodarone sterile concentrate added to 250 mL sodium chloride 0.9% andadministered at a flow rate of 129 mL per hour
D 8mLof amiodarone sterile concentrate added to 250mL glucose 5% and administered ata flow rate of 129 mL per hour
E 8mLof amiodarone sterile concentrate added to 500 mL glucose 5% and administeredat a flow rate of 254 mL per hour
18. (Original post by icantdothemaths)
Could you help me with this one please, I don't know where to even start!

A patient weighing 80 kg is prescribed amiodarone 5mg/kg to be administered over 120 minutes. Choose the most suitable preparation and flow rate for this prescription from the options below:

A 10mL of amiodarone injection (30mg/mL) added to 500mL glucose 5% and administered at a flow rate of 170 mL per hour
B 6mL of amiodarone sterile concentrate added to 500 mL sodium chloride 0.9% administered at a flow rate of 253 mL per hour
C 8mL of amiodarone sterile concentrate added to 250 mL sodium chloride 0.9% administered at a flow rate of 129 mL per hour
D 8mL of amiodarone sterile concentrate added to 250mL glucose 5% and administered at a flow rate of 129 mL per hour
E 8mL of amiodarone sterile concentrate added to 500 mL glucose 5% and administered at a flow rate of 254 mL per hour
sorry bout that i went to sleep after that last question you gave me xD it was getting very late.
hmm doesn't seem like A is a good answer since the rest are sterile concentrates and administering sodium chloride to patients is really the best of ideas

so that leaves us with D and E.

not really sure about this... seems like there should be something i know but i don't :/

so with a blind guess i'm going to go for D since a lower flow rate is better? because it's better the less stuff you put into someone's body? risks? hp hazards?

Zacken Student403 verify i chose something ok?
19. (Original post by thefatone)
sorry bout that i went to sleep after that last question you gave me xD it was getting very late.
hmm doesn't seem like A is a good answer since the rest are sterile concentrates and administering sodium chloride to patients is really the best of ideas

so that leaves us with D and E.

not really sure about this... seems like there should be something i know but i don't :/

so with a blind guess i'm going to go for D since a lower flow rate is better? because it's better the less stuff you put into someone's body? risks? hp hazards?

Zacken Student403 verify i chose something ok?

But why can't you give sodium chloride to patients? That's just table salt
20. (Original post by Student403)

But why can't you give sodium chloride to patients? That's just table salt
lol tbh to me it doesn't really make sense where you inject ppl with salt xD

u trying to kill someone? xD

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