galvansereena
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 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

which of the following means the arrest of heart contraction as may be induced by chemicals during surgery? A.Cardioplagia B.lyphostatis C.myocardial infraction
help me find the answer please?
What type of element is SBR4
Fraction first example is 2 by 5 is 2 parts of 5 but the second one 1 by 3 =? Third 2 by 4 is =?
In ancient mesopotamia, from 2800 bc to 650 bc, the city size was the empire size. it’s interesting to note that in____, the empire was larger, while the city s
which author had the most titles on a single new york times best-seller list in 2022?
What value of x is in the solution set of the inequality 4x – 12 ≤ 16 + 8x?
Addressing the families of the astronauts is mainly an appeal to____.
MORE MORE FREE POIN'T
Can you help me to answer those questions please