How many neutrons are in an atom of mg-25

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

One does not belong why? ice, gold ,wood ,diamond and table salt

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils