HELP NEEDED ASAP How many grams of nitric acid (HNO3) can be prepared from the reaction of 138 g of NO2 with 54.0 g H2 O according to the equation below? 3NO2 + H2 O → 2HNO3 + NO (At. Masses of N=14, O=16, H=1)
Select one:
a. 92
b. 189
c. 108
d. 126

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Fossil fuels are organic compounds that are made from

How many moles are contained in 5.6 l of h2 at stp