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

8 cats weigh 86 lbs. and 6 small dogs weigh 64.5 lbs. Is this proportional and if so, what is the constant of proportionality?

which civilization created the art shown here

Which group of people had it the hardest during the American Revolution

HURRY!!!!!!!!!!!!!!!!!!!! Jason and Ron together have 97 baseball cards. Jason has four more than twice as many cards as Ron. How many baseball cards does each

What rational number is between 2.46 and 2.47 on a number line

Which of the following is NOT an anxiety disorder? A. phobias B. post-traumatic stress disorder C. obsessive-compulsive disorder D. bulimia Please select

If x = 6 cm, find the area of this triangle.

simplify x+x^2+2x^2-3x

Cell B represents what type of major cell?

the life of Charles baudeliare