How many atoms are there in 5.70 mol of hanfnium? a) 3.43 x 10^24 moleculesb) 3.79 x 10^24 moleculesc) 1.26 x 10^24 moleculesd) 3.49 x 10^-24 moleculese) 1.05 x 10^-23 molecules(can you show how u got the answer .)

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.