Nitrogen has an atomic mass of about 14 amu and an atomic number of 7. how many neutrons does nitrogen have?

What is the density of the black hole

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign