For the complete combustion of 1.000 mole of methane gas at 298 K and 1 atm pressure, ΔH° = - 890.4 kJ/mol. What will be the amount of heat released when 1.97 g of methane is combusted under these conditions?

How long does nicotine stay in your system

How do scientists gather data to find reliable answers to questions? A. They follow a written procedure for an experiment. ОО O B. They use the same exact steps as other scientists. O C. The draw conclusions from the data of other scientists. O D.

Name and explain 2 positives of renewable energy

Identify the correct sequence of steps in the generation of an action potential. 1. Activation of sodium channels and rapid depolarization 2. Inactivation of sodium channels and activation of potassium channels 3. Depolarization to threshold 4.

You have a 23-g sample of ethanol with a density of 0.7893 g/ml. what volume of ethanol do you have?

Nancy wants to find out how the steepness of a hill's slope affects the amount of soil that erodes from it. She has soil, a long pan, and a pile of books with which to build a model hillside. She has a watering can to model rainfall.

What is the function of the ribosome

How much energy, in joules, does 150.0 g of water with an initial temperature of 25 C need to absorb be raised to a final temperature of 75 C

What mass of oxygen is contained in a 5.8 g sample of NaHCO3?

Which statement correctly compares the number of chromosomes in a body cell to that in a sex cell of humans? A. A body cell has 21 chromosomes; a sex cell has 23 B. A body cell has 21 chromosomes; a sex cell has two C.