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

who won the civil war

The people _____ arrived late had difficulty finding seats. which who

How did the ancient leaders of Greece and Rome unite their empires?

How do your arm muscles work to lift a mug of coffee to your lips?

a sphere is circumscribed about an 8-inch by 8-inch by 8-inch cube. Find the volume to the nearest cubic inch.

At a local fitness center, members pay an $8 membership fee and $4 for each aerobic class. Nonmembers pay $6 for each aerobic class. For what number of aerobics

which will hit the ground faster a ball thrown parallel to the ground or a ball drop from the same height as the ball

Which of the following is a compound sentence? A. Anywhere you want to go, we will follow. B. Do you want to go to the diner? C. Afte

A container holds a combination of dimes and nickels. There are 200 coins in all, and their total value is $16.30. The system of equations models this situation

which will hit the ground faster a ball thrown parallel to the ground or a ball drop from the same height as the ball