PLEASE PLEASE PLEASE HELP FAST!! NO LINKS! In the equation:

2H₂ + 1O₂ →→ 2H₂O

If you change the 2H₂ to 3H₂ molecules and balance the equation, which statement is correct?

A. The result of the equation will be the same.

B. The equation will produce three molecules of water.

C. It is not possible to produce water without leftover molecules.

D. Each oxygen molecule will combine with 2 hydrogen molecules with no leftover molecules.

  the volume of  0.220 m k2s    solution  required  to  completely  react with 175 ml  of 0.115m co(no3)2  calculate the moles  of co(no3)2 =  molarity x volume/1000175 x0.115/1000= 0.02  moleswrite  the reacting  equationk2s(aq)  +  co(no3)2  = 2 kno3(aq)  + cos(s)by  use  of mole ratio between k2s to co(no3)2 which  is  1: 1 the moles of k2s is therefore = 175  x0.115/1000= 0.02  molesvolume = moles/molarity=0.02/0.22=0.09  ml  of k2s

They are moving faster

Answer: option a.explanation.the question is incomplete. you should have shown the reaction on which x appears.any way, this question intends that you use the activity knowledge about the metals to predict which can replace x.1) then, you can approach the question by analizyng the activities of the four metallic elements shown in the choices; sr, al, sn, au.2) the activity series of the metals in the list of options, plus the hydrogen is:   sr > al > sn > h₂ > au.h₂ is included as a reference.3) from that series, you have: if the element replaced has more activity than al, only sr can replace it: these are some metals more active than aluminum but less active than sr: sr > ca > na > mg > be > al.and as the first series shows, al is more active than sn and au.then if the element fo be replaced is ca, na, mg or be, only sr is more active than al,  sn and au.from which, the answer is the option a.that has to be the answer, because any other metal would lead to an ambiguos answer.

Tensional stresses
normal faults are caused by tensional stresses and they causes the rock to elongate