Which element is present in every organic compound?

(1) carbon (3) nitrogen

(2) fluorine (4) oxygen

The volumes occupied by 7.5 moles of nitrogen and 7.5 moles of hydrogen (assuming ideal behavior) at standard temperature and pressure will be? A. 168 L and 168 L, respectively B. 7.5 L and 105 L, respectively C. 7.5 L and 1.07 L, respectively D. 7.

What is the heat of combustion per mole of quinone?

List 3 examples of velocity

What ion must be present for a compound to be considered a base?

Element Z has 2 natural isotopes. One isotope has a mass of 15.0amu and has a relative abundance of 30%. The other isotope has a mass of 16.0amu and has a relative abundance of 70%.

what combination will result in a acidic solution? a reaction of strong acid and strong base b reaction of strong acid and weak base c a reaction of weak acid and strong base d reaction of weak acid and weak base

How many moles of sucrose (C12 H12 O11) would be in 7.1 liters of a 0.93 molarity solution of sucrose?

If the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4

For the reaction of carbon with carbon dioxide to make carbon monoxide, one set of conditions produced a Kc = 1.2 * 10-1. At equilibrium at a certain temperature, the concentration of product was 0.60 M.

Water is a colorless and odorless liquid. It can exist in solid, liquid, and gas states. It boils at 100 degrees C and melts at 0 degrees C. Which option best describes this information? A. These are the physical properties of water. B.