Problems. to receive full credit, you must show all your work (gas law constamt r-00821 atm/mol k or 62.4 l torr/mol k) 1. (10 points) a sample of nitrogen gas occupies a volume of 8 50 l. at 0.980 atm. what volume does the gas occupy if the pressure is increased to 1.30 atm? 2. (10 points) a helium sample at 25 c has a volume of 1.82 l. if the pressure and amount of helium remain unchanged what will the volume of the gas be at 50°c? (10 points) a 0.85 mol of a gas has a volume of 758 torr and a volume of 21.0l. what will the volume be if the amount is increased to 1.00 mol and the pressure remains 3. unchanged?

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Ineed someone to see if my answers are correct! if any are wrong let me know what the correct answers would be and how to get that answer! 1. how many moles of sodium chloride are in 28 grams od nacl? a. 265 mole naclb. 856 mole naclc. 479 mole of nacld. 1.2 mole nacl < my choice2. 734 grams of lithium sulfate (li2so4) are dissolved to make 2500 ml of solution what is rhe molaratiy? a. 2.67 mb. 4.56 mc. 3.89 m < my choiced. 1.78 m3. how many grams of cacl2 would be dissolved in 3.0 l of a 0.50 m solution of cacl2? a. 250 g cacl2 b. 166.5 g cacl2c. 113.65 g cacl2d. 98 g cacl2 < my choice4. suppose you had 58.44 g of nacl and you dissolved it in exactly 2.00 liters. the molarity if the solution would be 0.5 mtrue < my choicefalse 5. i would need 22g of naoh to make a 3.0 m solution using 250 ml of solvent.true < my choicefalse6. identify the solute: you have a .0195 m solution made from using 6.5 g of solute and 3 l of solvent. identify the solute by solving for molar weight.a. the solute is nacl because the molar weight is 58.43 g/mol < my choiceb. the solute is h2so4 because the molar weight is 98.06 g/molc. the solute is cacl2 because the molar weight is 111.11 g/mol