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    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
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    What are your thoughts?
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    (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!
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    (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= \dfrac {1}{2}
    25=25%=0.25= \dfrac {1}{4}
    12.5=12.5%=12.5= \dfrac {1}{8}
    (Original post by Zacken)
    What are your thoughts?
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    lol
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    280/100=2.8 (so 1% is 2.8 grams)

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

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    (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
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    (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!
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    (Original post by thefatone)
    or do 280/8 which goes straight to 35
    Ah yeah nice, I didn't think of doing that
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    (Original post by thefatone)
    100=100%
    50=50%=0.5= \dfrac {1}{2}
    25=25%=0.25= \dfrac {1}{4}
    12.5=12.5%=12.5= \dfrac {1}{8}
    (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
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    (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
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    (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!
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    (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.
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    (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
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    (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
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    (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
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    he knows :O
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    (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
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    he knows :O
    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 hourB 6mL of amiodarone sterile concentrate added to 500 mL sodium chloride 0.9% andadministered at a flow rate of 253 mL per hourC 8mL of amiodarone sterile concentrate added to 250 mL sodium chloride 0.9% andadministered at a flow rate of 129 mL per hourD 8mLof amiodarone sterile concentrate added to 250mL glucose 5% and administered ata flow rate of 129 mL per hourE 8mLof amiodarone sterile concentrate added to 500 mL glucose 5% and administeredat a flow rate of 254 mL per hour
    Don't know where to start with that one!
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    (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
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    (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?
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    (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?
    Idk about this biology stuff :P

    But why can't you give sodium chloride to patients? That's just table salt
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    (Original post by Student403)
    Idk about this biology stuff :P

    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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