I'm having difficulties with these problems is there anyway way you can solve and show how you obtained the answer ?

Consider the reaction 2NH3(g)N2(g)+3H2(g) If the rate [H2]/t is 0.030molL1s1, then [NH3]/t is A) 0.045molL1s1 D) 0.010molL1s1 B) 0.030molL1s1 E) none of the above C) 0.020molL1s1 For the reaction 3A(g)+2B(g)2C(g)+2D(g) the following data were collected at constant temperature. Determine the law for this reaction