2. A radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013 disintegrations per 20 min. a. What percentage of the nuclide will have decayed after 200 days

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

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

How many moles are contained in 5.6 l of h2 at stp