Why do two isotopes of an element have the same atomic number but different mass numbers?

What is the concentration of a potassium iodate solution after you complete the following porcedure? Pipette 10 mL of a 0.31 M potassium iodate stock solution to a 100-mL volumetric flask and then add water to the mark.

What is the balanced equation of KI + Pb (NO3) 2 = KNO3 + PbI2

In what way would readings from a digital thermometer be preferable to those from a liquid-based thermometer? Readings from a digital thermometer are easier to use when performing calculations.

Lead is an important input in the production of crystal. If the price of lead decreases, then we would expect the supply of a. crystal to be unaffected. b. lead to increase. c. crystal to decrease. d. crystal to increase.

A gas barbecue burns propane gas to generate heat. Propane gas becomes carbon dioxide gas and water vapor as it burns. Oxygen from the air is a reactant in this process. This is an example of a chemical reaction.

How many liters of water are required to dissolve 1.00 g of barium chromate? express your answer in liters to three significant figures?

Cartography is the science of

If a sample of gas occupies 400 ml at a pressure of 800 mm Hg, what will be it's volume if the pressure is reduced to 700 mm Hg

Why are water storage tanks usually built on towers or hilltops?

What is convection cell