How many moles of gas are contained in a 30.0 L tube with a temperature of 300. K and pressure at 200. atm?

244 Moles

Which statement supports the claim that the continental crust was once joined together as one supercontinent, Pangaea?

The half-life of a certain radioisotope is 8 days. How much (mass) of a 80 mg sample will remain after 24 days?

Is the water density higher than the aluminum density

Write a structural formula for the principal organic product formed in the reaction of methyl bromide with koch2ch3 (potassium ethoxide). click the "draw structure" button to launch the drawing utility. draw structure ...

The following reaction shows sodium carbonate reacting with calcium hydroxide. Na2CO3 + Ca (OH) 2 → NaOH + CaCO3 How many grams of NaOH are produced from 20.0 grams of Na2CO3? (Molar mass of Na = 22.989 g/mol, C = 12.01 g/mol, O = 15.

1. If 25 grams of carbon dioxide gas is produced in this reaction, how many grams of sodium hydroxide should be produced? NaHCO3 > NaOH + CO2. If 50 grams of sodium hydroxide are produced, what is the percent yield?

G what is the difference between the sidechains of leucine and isoleucine? select one: a. one is charged, the other is not b. one has more h-bond acceptors than the other c.

How many grams of NaOH are needed to make 500 mL of a 2.5 M NaOH solution

During its life cycle, an amphibian lives both on land and in water.

An atom that contains 22 protons, 23 neutrons, and 22 electrons would have a mass of approximately