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

What is Circular Motion?

6.5 write in word form

The GCF (Greatest Common Factor) of 45 and 75. Show your work too. Thanks for your help!

If a line has no y-intercept, what can you say about the line?

find the opposite or additive inverse of 48 =

What is a distinct factor in math?

For the fair the organizers ordered 32 rolls of tickets each roll of tickets has 100 tickets how many tickets were ordered in all?

1/4(12x+16)=10-3(x-2) anyone?

convert to a scientific notation 860,000,000,000 =

how to write 0.632 in wordform please show an example