Which sample of hcl(aq) contains the greatest number of moles of solute particles?
(1) 1.0 l of 2.0 m hcl(aq)
(2) 2.0 l of 2.0 m hcl(aq)
(3) 3.0 l of 0.50 m hcl(aq)
(4) 4.0 l of 0.50 m hcl(aq)

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars