What is the molar mass, in grams, of a mole of an element equal to?

the number of electrons in the element

the atomic weight of the element

the atomic number of the element

the number of neutrons in the element

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Consider the following equilibrium systems: A⇌2B ΔH o = 20.0 kJ/mol Reaction 1 A+B⇌C ΔH o = -5.4 kJ/mol Reaction 2 A⇌B ΔH o = 0.

Draw the structure of the aromatic organic product formed from the reaction of the following compound with KMnO4.

Which of the following is true? a. Tardigrades can survive both extreme heat and extreme cold. b. Tardigrades can survive extreme heat, but not extreme cold. c. Tardigrades can survive extreme cold, but not extreme heat. d.

What is the scientific word for the smell of rain?

Which of the following is not a chemical reaction a) gas formation b) solid formation c) energy change d) state change

How many moles of copper are needed to react with sulfur to produce 0.25 moles Ol copper (1) sulfide according to the following reaction: 2 Cu + S + Cuzs

If you wish to warm 52 kg of water by 22 ∘c for your bath, find what the quantity of heat is needed. express your answer in calories cal.

Which of the following compounds is the most soluble in water? a) propanoic acid b) propane c) propanal d) l-bromopropane

What mass of solid Na2CO3 is required to make 250.0mL of a 0.125M solution of Na2CO3?