The bright light emission spectrums below are seen through a spectroscope. the unknown sample is a mixture of the
observed gases. which gases are found in the unknown sample?

When the water vapor cools it condenses select a number that represents his process on the

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.