galvansereena galvansereena

04-06-2021
Chemistry

contestada

If 81g of water is measured out, how many moles are in the sample? *
A. 4
B. 5
C. 2.5
D. 4.5

Respuesta :

unknown767 unknown767

05-06-2021

Answer:

D

Explanation:

because moles = mass /mr

so 81/18(mr of H2O=2+16)

moles =4.5

hope this helps:)

Answer Link

Otras preguntas

A.passes laws and adopts budgets B.resolves disputes among members C.ensures legislation is applied fairly D.represents the EU globally A recent challenge to th

Which source would best help a historian understand the effect of the Great Chicago Fire on families? A. a biography of a Chicago family displaced by the fire

Solve the equation.Then check your solution 8=1.88+a

"The Children's Hour" by Henry Wadsworth Longfellow Between the dark and the daylight, When the night is beginning to lower, Comes a pause in the day's occupa

What's the answer to 4x-7=-27

Which sentence correctly conveys the same meaning as this sentence? Eres paciente. A. Tienes paciencia. B. Tiene paciencia. C. Tienen paciencia. D. Tengo

The adventures of Tom Sawyer, chapter 6 (excerpt) Please hurry!!!! What does Tom do to get Sid’s attention? A) Tom lies in bed as he tries to think of an excus

The________ Amendment was the first government definition of a citizen. Answer = fourteenth amendment

In Ohio in 1872, the Cleveland Massacre was a)a violent labor dispute at Standard Oil refineries in Cleveland. b)a takeover by Standard Oil of the refineries in

add -ment to the following word. you may use a dictionary