An unknown material has a specific heat capacity of 0.279 J/g*C. If it releases 367 J of energy when the temperature of it is lowered by 28 degrees, how much mass was
present of that material?

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?