A sample of hydrogen gas occupies 17.5 L at

STP. How many moles of the gas are present?

Answer in units of mol.

Give the characteristic of a first order reaction having only one reactant. a. The rate of the reaction is not proportional to the concentration of the reactantb.

4. When you leave a cold bottle of soda out on a warm humid day, water begins to condense on the surface of the bottle. Describe what is happening in terms of energy change.

Where can you find the elements that are in the same family as calcium

What do methanol (CH2O), ethanoic acid (C2H4O2), and glucose (C3H6O3) all have in common? a. They are all carbohydrates b. They all have the same empirical formula c. They all have the same % composition d. All of the above are true

If every oxygen ion (combined with an aluminum ion) has a charge of - 2, what must the charge of each aluminum ion be?

Elements on the periodic table are arranged by increasing?

What is the difference between molecular formula and molecular model

The average kinetic energy of the atoms that make up a substance which is changing from a liquid to a solid is

What might be a scientific question? O A. One that deals with how something happens O B. One that deals with morals and beliefs O C. One that deals with likes and dislikes O D. One that deals with right and wrong

Calculate the energy released in the following fusion reaction. The masses of the isotopes are: 14N (14.00307 amu), 32S (31.97207 amu), 12C (12.00000 amu), and 6Li (6.01512 amu).