You have 80 g of a radioisotope. If the half-life of this radioisotope is 4 days, how many grams will remain after 16 days? Must show work or reasoning for full credit

Which of the following aqueous solutions are good buffer systems? 0.31 M ammonium bromide + 0.39 M ammonia 0.31 M nitrous acid + 0.25 M potassium nitrite 0.21 M perchloric acid + 0.21 M potassium perchlorate 0.16 M potassium cyanide + 0.

Indicate whether each statement is true or false. If you measure the rate constant for a reaction at different temperatures, you can calculate the overall enthalpy change for the reaction. Exothermic reactions are faster than endothermic reactions.

5. What volume would you need to dilute 0.2 L of a 15 M solution to obtain a 3 M solution?

Jack hypothesize that more mold will grow on a slice of bread that is left in the dark that a slice of bread left in the light he wants to do in experiment to test this hypothesis Jack has four slices of bread for this experiment was condition

Which reagent is the limiting reactant when 0.700 mol al (oh) 3 and 0.700 mol h2so4 are allowed to react?

How do the compounds that cause acid rain spread from their source?

Which element is used to "paint" the skin to prevent infection from cuts and scratches

A homogeneous mixture in which one substance is dissolved in another substance is known as a (n)

Determine the mass of 1.68*10^ 35 atoms of neon gas

What is the molar mass of Sr (OH) 2