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

please help asap everything is in the ss

What is the answer?

3. Which of the following may result in desertification? O overgrazing O overfishing O drilling in oil O using insecticides

7(2x + 3) – 5x - 9 help please

i need help with this asap

Lin and Han's families provide money for their school lunch accounts. • Han starts with $100 in his account. He spends $15 each week on lunches. • Lin starts wi

A ______________________is a group of stars that has been given a name to help us find certain stars or recognize them a cluster b gaggle c constellation d

What happened to Holocaust survivors following the end of World War II and how those events helped lead to the establishment of the nation of Israel.

What is charitable giving important to Muslims

in multicellular organisms groups of cells that work together are called:______.