alexandriaserna alexandriaserna

07-06-2017
Chemistry

contestada

How many Helium atoms are in 12 grams of Helium?

Respuesta :

noobstudent noobstudent

08-06-2017

12gHe/1 × 1molHe/4.0026g × 6.02x10^23atomHe/1mol = 1.8 atoms

Answer Link

Otras preguntas

Which statements are part of the safety protocol for this lab experiment? Check all that apply

Which of the following choices is an example of a capital good?

Which of the following mixed numbers has the same decimal value as 110 147/168A. 110 49/56B. 110 170/180C. 110 56/72D. 110 247/268

Evaluate (a + b)3 – 12 when a = 2 and b = 1.

At higher doses, vitamin _____ may increase all-cause mortality and is linked to longer blood-clotting times and tendency to hemorrhage.

8. A tennis match ends at 3.20pm. It was on for 3 hours 50 minutes. When did it start? I know the answer but how to explain to child when hour changes.

Jesse walks 3 1/2 miles in 1 1/4 hours.

I need to figure out the x in this equation. 7x - 10 = 25

at least one of the philosophers whose ideas influenced the writing of the costitution!! write it like a essay please. about 30 words at least

this is for hw. if u could help that would be amazing! n o b o t s