Dividing the mass by the volume.
Answer:
C
Explanation:
∆H°f means the enthalpy change of formation of one mole of substance by its constituent elements under standard conditions.
So in an equation for ∆H°f, we must see 2 or more elements as reactants combining to form a compound.
In the 4 answers, only C represents elements forming a substance (Al(s) + 3/2O2(g) + 3/2H2(g) -> Al(OH)3(s)),
while the others include compounds as one of their reactants.
The patient should be given 285.71 ml.
1000 ml contains 70 gr glucose.
x contains 20 gr glucose.
x=1000*20/70
0.035L
35.4mL
Explanation:
Given parameters:
Concentration of HCl = 12M
Number of moles = 0.425mol
Unknown:
volume of solution = ?
convert from L to mL = ?
Solution:
Molarity is the amount of solute in a volume of solvent
Molarity = 
since the volume is the unknown, we make the subject of formula;
Volume = 
Volume =
= 0.035L
Converting to mL gives:
1L = 1000mL
0.035L = (0.035 x 1000)mL , 35.4mL
Learn more:
Molarity brainly.com/question/9324116
#learnwithBrainly