A graduated cylinder contains 20.0 mL of water. An irregularly shaped object is placed in the cylinder, and the water level rises to the 31.2-mL mark. If the object has a mass of 98.4 g, what is its density? A. 3.15 g/mL B. 8.79 g/mL
C. 4.92 g/mL D. 0.114 g/mL

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

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