hòa tan 1mol kno3 vào 1 kg nước nhiệt độ đông đặc thấp hơn của nước là 3,01 độ . hằng số nghiệm lạnh cảu nước là 1.86. độ điện ly của nước là

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.