The [ HCl ] after 23 s was 0.167 mol / L. After 142 s, the [ HCl ] was 0.463 mol / L. Calculate the rate of reaction.

Chlorine has the electron configuration 1s22s22p63s23p5. how many valence electrons does it have?

Which of the following is a true statement? A. You can live longer without water rather than without food B. Proteins are your body's main source of energy C. Sports drinks have two very important ingredients - electrolytes and carbohydrates D.

What evidence did dalton have that atoms actually exist?

Which of the following is an example of a solution? A. None of these B. Mercury, liquid at room temperature C. Sugar dissolved in tea D. A mixture of rock granules and bits of shell known as sand

What is the salt that is produced when calcium hydroxide (Ca (OH) 2) reacts with sulfuric acid (H2SO4) ?

What is the equivalent mass of HBr in a complete neutralization reaction?

Coal can be converted to methane gas by a process called coal gasification. The equation for the reaction is the following: 2 C (s) 2 H2O (l) - -> CH4 (g) CO2 (g) What mass in grams of carbon is required to react with water to form 1.00 mol CH4

When more than one variable in an experiment is changed at a time, the scientist A. cannot tell which change produced the results. B. cannot accurately measure both variables at the same time. C.

Which statement describes how Earth compares to the moon?

What was your relative pH for bleach? This means there were ___ moles of PH - ions present in bleah.