If a neutral atom of oxygen (O) has 8 protons, 8 electrons and 7 neutrons, what is the mass number of this atom?

A. 8

B. 15

C. 16

D. 23

Gases are highly compressible due to

In a reaction, 24.9 L of N2 reacts with excess Hy to produce NH3. How many liters of NH3 were produced? How many grams of NH3 is this? The pressure in the lab is 97.8 kPa and the temperature was 23.7°C.

List ten methods in separating mixture

Carbon disulfide is an important industrial solvent. It is prepared by the reaction of coke with sulfur dioxide. 5 C (s) + 2 SO2 (g) - - > CS2 (l) + 4 CO (g) How many moles of CS2 form when 2.79 mol C react?

A bar of metal has a volume of 4.5 cm3 and a mass of 33 g. What is the density of the metal?

What are the three particles of an atom

Which of these are the largest? asteroids, comets, meteors, or are they all the same size?

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state

Prevailing winds peru