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

look at the image below urgent !!!!!!

Question 19 of 20: Select the best swer for the question 19. The distance from the center of a round table top to the edge of the table top is 4 ft what is the

6. How are supernovae involved in new planet formation? They consume all the nearby nuclear fuel and allow new planets to form. They are the death of massive st

Please help. I don't understand anything.

difference between Nitrogen 1 oxide and Oxygen

why do you choose to be a teacher ?

A clothing factory makes small, medium, and large sweaters. Last week, the factory made 1,612 sweaters. The factory made 3 times as many small sweaters as large

please help asap!!!!

Which of these statements is NOT true regarding a randomized block design experiment?a.)This design has an advantage of controlling for variables that might con

VERDADERO O FALSO LAS AGUAS INTERORES FORMAN PARTE DEL TERRITORIO DEL ESTADO PROPIAMENTE DICHO. ESTAN SOMETIDOS A LA SOBERANIA PLENA DEL ESTADO ADYACENTE.