Calculate the calorimeter constant if 2.0g of C2H2(g) were ignited in 2725g H2O calorimeter and a 4.70deg C temp change was observed. The heat of combustion of C2H2(g) is - 1299.5/mol.

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

Modern weaponry has increased the number of deaths in wars and violent conflicts.

Which formula can be used to calculate the molar mass of hydrogen peroxide