jwild1315 jwild1315

15-07-2017
Chemistry

contestada

A helium balloon contains 0.54 g of helium. given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?

Respuesta :

dec77cat dec77cat

15-07-2017

m(He)=0.54 g
M(He)=4.0 g/mol

n(He)=m(He)/M(He)

n(He)=0.54/4.0=0.135 mol

Answer Link

Otras preguntas

Ryan is buying cherries that cost $1.92 per pound. If he buys 1/5 pounds of cherries, how much will it cost him?

I do not understand this question

The 10th amendment to the United States’ constitution limits the power of the central government by which of the following selections? Select one: A. giving th

If d = - 3,evaluate -d

what is another word for knowing yourself

How many terms are in the algebraic expression 11y + 3

I need help with this

Why did guilds want to influence the city government?

An element has 4 protons, 5 neutrons, and 4 electrons. What is the atomic mass of the element? 4 5 8 9

find the lesser of two consecutive integers with a sum greater than 15