Asample of the radioisotope potassium-40 is crushed to increase its surface area. the temperature of the sample is then lowered 25°c. what affect do these changes have on the rate of nuclear decay? a.)the decay rate doubles b.)the decay rate decreases by half c.)the decay rate increases by half d.)the decay rate does not change

How many atoms are there in 5.70 mol of mg

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.