mackaliyah mackaliyah
  • 17-05-2022
  • Chemistry
contestada

A grain of sand weighs approximately 0.0102 grams. How many molecules of SiO2 are in a grain of sand? Assume that sand is 100% SiO2.

Respuesta :

d23rud61 d23rud61
  • 17-05-2022

Answer:

 0.5

Explanation:

Answer Link
indrawboy
indrawboy indrawboy
  • 17-05-2022

mol = mass  : MM SiO₂

mol = 0.0102 : 60 g/mol = 0.00017

molecules = 0.00017 x 6.02 x 10²³ = 1.0234 x 10²⁰

Answer Link

Otras preguntas

how to turn 12/16  in simplest form
a candidate who already holds the office for which an election is being held is the _______________________
what is  10xy^2 + 5x - 4y^3 + 6 -x + 5x^2y + 6xy^2 - 2
why might the range not be the best estimate of variability?
Why do most proteins need near a neutral pH?
What is the symbol for lipids, DNA and proteins
Which of these is a demonstration of a chemical change?  A.ice melting into water  B.wood becomes charred and black from burning  C.water evaporates from a suga
What is the value of x in the equation 4x + 8y = 40, when y = 0.8?
How was the southern colonies arranged?
Linda had a garage sale. She set up three tables at the garage sale and all items on the same table cost the same amount. On table A, items cost $1.25 each.