An element with 14 electrons has a mass number 32. how many protons does this element have?

What is the mass percent composition of oxygen in ethylene glycol, c2h6o2?

How many moles of sebacoyl chloride do you have if you measure out 5 mL of a 9% volume/volume solution in cyclohexane?

To remove leaves and acorn in soil would it be filtration or distillation and why

Photoelectrons are removed with kinetic energy 1.864*10^-21 J, when photons of light with energy 4.23*10^-19 J fall on the metal. What is the minimum energy required per mole to remove an electron from potassium metal?

Identify the option below that exemplifies how the intrinsic chemical properties of a reactant affect the rate of reaction. Select the correct answer below: When exposed to air, sodium reacts completely overnight, whereas iron barely reacts.

Are 3 eggs the same quantity as 3 dozen eggs?

What is an empirical formula? O A. The chemical formula that reveals how the molecule actually exists in nature O B. The chemical formula that is written in terms of percent composition O C.

What part of an original isotope's number of atoms remains after two half lives?

What gas has formed when bubels form when water is boiled?

A physical property can be observed or measured without changing the identity of a substance. Which of these choices describes a physical property? The temperature at which a liquid will boil. The tendency of a substance to explode.