oroman4650
08.04.2020 •
Chemistry
A sample of helium gas occupies 12.9 L at 315 K and 1.20 atm.
This sample contains how many moles of helium?
Solved
Show answers
More tips
- S Style and Beauty Discover the Art of Nail Design: How Do You Paint Your Nails?...
- P Philosophy How to Develop Extrasensory Abilities?...
- O Other Everything You Need to Know About Kudyabliks...
- C Computers and Internet The Twitter Phenomenon: What it is and How to Use it...
- C Computers and Internet How to Choose a Laptop: Expert Guide and Tips...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
Answers on questions: Chemistry
- C Chemistry What acid and alkali would react to make sodium sulphate tick 2: hydrochloric acid nitric acid potassium sulphate sodium hydroxide sodium nitrate sulphuric acid could...
- C Chemistry Brainliest how many bonding and nonbonding electrons are on the nitrogen atom in no2?...
- C Chemistry If you are given grams of one substance and want to convert to moles of another substance, what will be the first conversion you have to do? O Grams to moles using molar...
- C Chemistry Part A Select your answer from the options below. 3 A(9) - B(9) + 2 C(1) 3 A(9) - B(l) + 2 C(1) None of the choices are correct. 3 A(g) +B(1) – 2 C() 3A(9) - B(g) + 2...
- C Chemistry 1. About how many carbon-14 atoms from a sample of 800 C-14 atoms will remain after 2.0 half-lives? (divide # by 2 for each half-life) 2. About how many N-14 atoms will...
- C Chemistry The frog population in the amazon basin varied. every 500 years there was a mutational change leading to speciation. in between the population remained the same with no...
- C Chemistry Why is it expensive to extract copper from the land by the traditional method?...
- C Chemistry What unit of measure does pressure need to be in for the combined gas law?...
- M Mathematics Solve the Application. Jacob threw 592 bread crumbs to the ducks at the duck pond and Martha threw 629 bread crumbs. When they left, there were 171 bread crumbs left on...
- C Chemistry A.) Please be sure to use the textbook and any other websites to discuss Fiscal Policy. Include in your paper the importance and significance of the Council of Economic...
Ответ:
There are 0,6 moles of helium.
Explanation:
We use the ideal gas formula, we use the gas constant R = 0.082 l atm / K mol and we solve for n (number of moles) of the formula:
PV=nRT --> n= PV/RT
n= 1,20 atm x 12,9 L/ 0.082 l atm / K mol x 315 K= 0,599303135 moles
Ответ: