Which model of the atomic theory first stated that "at the center of the atom is a dense area of positive charge called a nucleus. It also states that the electrons are
outside of the nucleus and that the area between the nucleus and electrons is
mostly empty space."

May someone me with these science questions

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

What natural processes produce large quantities of co2