Atoms of elements that are in the same group have same number of –
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Urea, co(nh2)2, is manufactured on a large scale for use in producing urea-formaldehyde plastics and as a fertilizer. what is the maximum mass of urea that can be manufactured from the co2 produced by combustion of 1.00 x 104 grams of co2?

How air particles exert a pressure on the inside of the balloon

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density