Suppose that a 100 ml sample of ideal gas is held in a piston-cylinder apparatus. its volume could be increased to 200 ml by :

a. increasing the temperature from 25oc to 50oc at constant pressure.

b. increasing the pressure from 1.00 atm to 2.00 atm at constant temperature.

c. reducing the temperature from 400k to 200 k

d. reducing the pressure from 760 torr to 600 torr while increasing the temperature from 25oc to 100oc

e. reducing the pressure from 608 torr to 0.40 atm at constant temperature.

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation: 3no2(g)+h2o(l)→2hno3(l)+no(g) part a suppose that 4.2 mol no2 and 0.50 mol h2o combine and react completely. which reactant is in excess? express your answer as a chemical formula. nothing

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

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