Other Chemistry Answers

2. What is the volume of a sample of laughing gas, N2O, that contains 7.11*1021 molecules of the compound?

3. If a balloon contains 2.14L of neon gas, what mass of neon gas is contained within the balloon?

4. If I hand you 6.92*1025 atoms of tungsten, what is the mass of the sample you receive?

For the following chemical reaction, what mass of phosphoric acid, H3PO4, in grams will be needed to produce 1.71 mol of water, H2O?

3KOH+H3PO4⟶K3PO4+3H2O

In an extremely explosive reaction between Glucose (C6H12O6) and Oxygen, 294.7g of water is produced when 500 grams of glucose is combusted. What is the percent yield of this reaction? (remember that the products of a combustion reaction are water and carbon dioxide)

a sample of CaCO3 of mass 2.8g was reacted with 75 cm3 of 1.0 mol/dm3 hydrochloride acid. The resulting solution was completely transferred into 250 cm3 of volumetric flask and the mixture made up to the mark with distilled water. 25 cm3 of this solution needed 20.05 cm3 of 1.0 mol/dm3 of NaOH to neutralize the excess acid. Calculate the percentage of CaCO3 present in the sample.

What is meant by degeneracy ? Calculate degeneracy for the J = 0, 1, 2 rotational energy levels.

A 2.0 L flexible container holds 5.0 moles of oxygen (O2) gas. An additional 15.0 moles of nitrogen gas (N2) is added to the container. What is the new volume of the container?

If 1.45 L of water has an initial temperature of 25.0 C, what is its final temperature be after absorption of 9.4 X 10^22 kWh of heat?

What volume in L of O2 at STP is needed to burn 1.00 L (702g) of octane

Rank the following compounds in order of increasing boiling point and state which types of intermolecular forsee are present in each molecular

CH3-CH2-OH CH3-CH2-CH3 Ch3-O-CH3

Calculate the heat flow when 13.8 G of benzene at 10.0 degrees C is cooled to -10.0 Celsius