Answer:
18.2784 g
Explanation:
First we <u>convert 180 lb to kg</u>:
- 180 lb * 0.453 kg / lb = 81.6 kg
Now we <u>calculate the mass of antibiotic taken in one day</u>:
- 8.0 mg/kg * 81.6 kg = 652.8 mg
Given that it is taken twice daily, <em>in one day the person would take (652.8 * 2) 1305.6 mg</em>. In grams that mass would be:
- 1305.6 mg / 1000 = 1.3056 g
Finally we multiply those 1.3056 daily grams by the 14 days in two weeks:
- (1.3056 g) * 14 = 18.2784 g
I will try to do it but not more than 70.4
Answer: 10.3 grams of Copper oxide is left unreacted.
Explanation:
To calculate the moles :
The balanced chemical reaction is:
According to stoichiometry :
1 moles of require = 1 mole of
Thus 0.5 moles of will require= of
Thus is the limiting reagent as it limits the formation of product and is the excess reagent.
moles of CuO left = (0.63-0.5) mol= 0.13 mol
Mass of left =
10.3 grams of Copper oxide is left unreacted.
Peanut oil. This is because all other oils would be in their liquid state, while peanut oil would remain a solid. This means you can easily filter the solid out