What is the number of grams in 500 kilograms

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Answer! if you don’t mind, can you explain

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.