A radioactive sample with a half-life of 1 day is placed in a container. Three days later, only 1 kg of the substance is still radioactive. How much pf the radioactive substance was initially placed in the container

In salt water solution,the salt is the blank

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases

Astudent states that 9.0 g of baking soda will form an unsaturated solution in 100 g of water. what do you need to know to decide whether this statement is correct? a. the temperature of the water and the molar mass of baking soda b. the percent by volume of the solution and the solubility of baking soda c. the temperature of the water and the solubility of baking soda at that temperature