Oxygen s atomic number is 8. this means that an oxygen atom has

a. eight neutrons in its nucleus.

c. eight protons in its nucleus.

b. a total of eight protons and neutrons.

d. a total of eight neutrons and electrons.

What is the scientific name for button mushrooms?

2CH3CH2OH (l) → CH3CH2OCH2CH3 (l) + H2O (l) If 28.0 g of NH3 and 168.8 g of ClF3 are allowed to react, what masses of each product would be recovered assuming complete reaction?

Which value would be required to estimate the lattice energy for the hypothetical ionic compound MgH2? A the electron affinity B the first ionisation energy C the magnesium-hydrogen bond energy D the standard enthalpy change of formation of MgH2

How do frogs regulate the pressure inside their head while swimming?

What do iron and nickel have in common? a. They are both used in the manufacturing of ammonia. c. They are both used as catalysts to produce common household products. b. They are both used in the manufacturing of margarine. d.

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume

Which of the following statements about igneous rocks is correct A. intrusive igneous rocks are formed when magma is called above the ground. B. Extrusive igneous rocks are formed when magma is cooled above the ground C.

The compound KOH is called

A balloon contains 1.00 mol helium gas at STP. What will the volume of the balloon be if the pressure increases to 2.00 atm?