How many moles of CH4 are there in 50 grams of CH4?

An atom of which element has the strongest attraction for electrons? A) Ba B) Cs C) O D) F

A solution of ammonia has a pH of 10.50. what is the initial molarity of ammonia? Kb for ammonia is 1.8x10^-5

What is the Na + concentration in each of the following solutions: (A) 3.65 M Sodium Sulfate= (B) 1.38 M Sodium Carbonate= (C) 0.785 M Sodium Bicarbonate= ((B)) What is the concentration of a lithium carbonate solution that is 0.695 M in Li+?

Explain in terms of chemical interaction how milk of magnesia acts to calm an upset stomach.

When balancing an equation, you must make sure that a. the number of atoms for each element are the same on the product side and the reactant side b. the products have more atoms than the reactants c.

Which of the following statements is true? A. Particles of a solid have a very orderly, three dimensional arrangement and do not move B. Particles of a liquid change shape and volume C.

How does hess's law use intermediate reactions to calculate the enthalpy of a desired reaction?

Which atomic particle dtermines the chemical behaviour of an atom?

If you could travel to the Sun and back, about how far would you travel? A. 1 AU B. 2 AU C. 5 AU D. 10 AU

A scientist is conducting a descriptive experiment where she is monitoring sea level along coastal towns in California. What is a major benefit of this experiment? The relationship shows cause and effect. It is repeatable.