3 years ago

A helium balloon contains 0.46g off helium. how many moles of helium does it contain?

Chemistry

1 answer:

EastWind [94]3 years ago

3 0

(0.48 gram) x (1mole / 4.0 gram) = 0.48/4.0 = 0.12 mole

You might be interested in

On the diagram below, circle the position of the where the southern hemisphere is experiencing spring. Justify your answer

luda_lava [24]

Answer: D

Explanation:

The sun shines the sputhern hemisphere fully on the top= summer

the sun shines somewhat towards the Southern Hemisphere but itfaces away= fall

sun doesnt show at the bottom= winter

faces it more than example b= D

5 0

3 years ago

Read 2 more answers

Which statements describe an element? Check all that apply.

Tems11 [23]

Answer:

A,B,E

Explanation:

A) Elements can't be physically separated.

B) Elements are indeed made of only one type of atom

E) Elements cannot be broken down into a simpler form, at least not without a ton of energy being released as an explosion :)

8 0

3 years ago

Read 2 more answers

How many particles can be stored in a 4.0 L container at room temperature (23 C) and standard atmospheric pressure

velikii [3]

Answer: 9.91×10²³ particles

Explanation:

To find the amount of particles, you will need to use the Ideal Gas Law with what we are given.

Ideal Gas Law: PV=nRT

After we find moles, we can use Avogadro's number to convert to particles.

$n=\frac{PV}{RT}$

P=101.3kPa=1.00 atm

V=4.0 L

T=23°C+273.15=296.15 K

R=0.08206 Latm/Kmol

$n=\frac{(1.00 atm)(4.0 L)}{(0.08206Latm/Kmol)(296.15K)}$

$n=0.164595 mol$

Now that we have moles, we can convert to particles.

$0.164595mol*\frac{6.022*10^2^3 particles}{mol} =9.91*10^2^2 particles$

5 0

3 years ago

What is the outcome of the experoment?

Vikki [24]

The outcome of a experiment is the result

3 0

3 years ago

HELP! ASAP!!! WILL MARK BRAINLIEST!!

san4es73 [151]

Answer:

Alkali Metals are Group 1 so

Rb it isnt Hydrogen because it is a gas

Explanation:

8 0

3 years ago

Read 2 more answers