What is the energy of a photon with a 6 micrometer wavelength (1 m = 10^6micrometers)? O 3 x 10-34 )
O 3 x 10-32
O 3 x 10-20 ]
O 3 x 10-20 j

Which best explains why an iceberg floats?

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ