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Lady bird [3.3K]
3 years ago
10

A provider order states, “meperidine (demerol®) 45 mg, atropine sulfate (atropine®) 0.3 mg im now.” the meperidine (demerol®) co

mes in a pre-filled syringe containing 50 mg/ml, and the atropine sulfate (atropine®) comes in a vial containing 400 mcg/ml. what is the total volume that the nurse will be injecting?
Chemistry
1 answer:
alexandr402 [8]3 years ago
4 0
To find the volume, just divide the mass by the dosage in mass per volume. Then, add both volumes to find the total volume. The solution is as follows:

45 mg ÷ 50 mg/mL = 0.9 mL

For the second unit, mcg is micrograms. For every 1 mcg, there is 0.001 mg. Thus,

400 mcg/ml * 0.001 mg/1 mcg = 0.4 mg/mL
0.3 mg ÷ 0.4 mg/mL = 0.75  mL

Total Volume = 0.9 mL + 0. 75 mL = 1.65 mL
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In this experiment, the aim is to measure the specific latent heat of fusion of water. In order to do that, a mix of ice/water is heated with a certain amount of heat Q, and then it is evaluated the amount of mass m that undergoes melting.

An important precaution that must be taken in this experiment is that the temperature of the water/ice mixture remains constant and equal to the melting point of ice (otherwise, part of the heat supplied to the mixture is used to increase the temperature of the water, resulting in an inaccurate measure of Q). Therefore, a thermometer must be used to check constantly the temperature, and this thermometer must be placed inside the ice/water mixture only (It should not touch the saucepan, whose temperature can be higher).

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in contact with the ice/water only

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3 years ago
What pressure is exerted by 932.3 g of CH4 in a 0.560 L steel container at 136.2 K?
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