Answer:
affected by the concentration of the The exponents in a rate-law expression define the reactant. O concentration o instantaneous rate O specific rate constant
Explanation:
What is the mass, in grams, of 0.00948\,\text {mol}0.00948mol0, point, 00948, start text, m, o, l, end text of phosphoric acid?
gulaghasi [49]
Answer:
m = 0.929 grams
Explanation:
We have,
Number of moles of phosphoric acid is 0.00948
It is required to find the mass of phosphoric acid.
The number of moles in a given molecule is given by :
m is mass and M is molecular mass
The molecular formula of phosphoric acid is . Its molecular mass is :
So,
So, the mass of phosphoric acid is 0.929 grams.
I think its A
I hope this helps
I’m assuming this means mass percent, because that is typical of these types of problems. The substance with the highest mass percent of Br would be the one where the molar mass of Br over the molar mass mass of the substance has the highest value. This would require the other component of the substance to have as small of a molar mass as possible, and by inspection of the periodic table, it is evident that this would be lithium, which has a molar mass of 6.941 amu rather than potassium’s 39.10 or cesium’s 132.91. This means that the correct answer should be C. LiBr.