Z forms chloride compounds with the formulae ZCl2 and ZC13. ZCl2 is a pale green solid and ZC13 is a brown solid.

Based on the given information, which are true about element Z?

I Element Z has high melting point.

II Element Z can form complex ion.

III Element Z has more than one oxidation number.

IV Element Z is a metalloid.

A I, III
B II, IV
C I, II, III
D I, II, III, IV

(B) II, IV.

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question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)