Number of proton and newton of calcium

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Which best explains why an iceberg floats?

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action