Which is one way surface water may become groundwater

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth