What is the density of N2 gas (molar mass: 28 g/mol), at 400 K and 2 atm?

What is the partial pressure of ethane, pethane, in the flask?

The reaction between nitrogen and oxygen is given below: 2 N2 (g) + O2 (g) 2 N2O (g) We therefore know that which of the following reactions can also occur?

Which word is the longest word in chemistry?

Which of the following is a nonrenewable energy source? a:solar b:wind c:natural gas d:geothemail

What is the mass in grams of 300 mL of salt water with a density of 1.30 g/cm^3

Which of the following is a physical change of matter? A) Roasting marshmallows B) mixing kool-aid and water C) mixing alka seltzer and water D) baking a cake

Calculate [OH-] for each solution. 1. pH = 13.48 Express your answer using two significant figures. 2. pH = 8.19 Express your answer using two significant figures. 3. pH = 2.12 Express your answer using two significant figures.

State whether the following statements are true or false (with justification). (a) 1 mol of N2 has more molecules than 1 mol of Ar. (b) 1 mol of N2 has more mass than than 1 mol of Ar. (c) The molar mass of N2 is greater than the molar mass of Ar

One year ago, you sold a put option on 100,000 euros with an expiration date of 1 year. you received a premium on the put option of $0.04 per unit. the exercise price was $1.22. assume that 1 year ago the spot rate of the euro was $1.

Calculate the product of 0.0002115m and 0.0000405m. Express the answer in scientific notation