If the specific heat of water is 4.186 kj/kg∙°c, how much heat is required to increase the temperature of 1.2 kg of water from 23 °c to 39 °c?

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Which of the following is true about the speed of light? it depends on the wavelength.