You are in browse mode. You must login to use MEMORY

level: Chemical Formulae & Reacting Quantities

Questions and Answers List

Question	Answer
What is the chemical formula for Sodium Chloride?	NaCl
What is the chemical formula for lithium nitrate?	LiNO₃
What is the formula for Zinc(II) Sulfide?	ZnS
What is the formula for phosphorus pentachloride?	PCl₅
What is the ionic formula for Calcium Chloride?	Ca²⁺(Cl⁻)₂
What is the ionic formula for Tin Oxide?	Sn⁴⁺(O²⁻)₂
What is the ionic formula for Lithium Nitrate?	Li⁺(NO₃⁻)
Calculate the gram formula mass of NaOH	40g
Calculate the gram formula mass of C₆H₁₂O₆	180g
Calculate the gram formula mass of water	18g
What is the formula for calculating number of moles of a substance? (when given mass)	n=m/gfm
in the formula n=m/gfm what is n?	number of moles in mol
in the formula n=m/gfm, what is m?	mass in g
in the formula n=m/gfm, what is gfm?	gram formula mass in grams
Balance this equation: C₃H₈ + O₂ → CO₂ + H₂O	C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Balance this equation: P + Cl₂ → PCl₃	2P + 3Cl₂ → 2PCl₃
Balance this equation: CO₂ + H₂O → C₆H₁₂O₆ + O₂	6CO₂ + 6H₂O → C₆H₁₂O₆ + 9O₂
What is the (s) state symbol?	Solid
What is the (l) state symbol?	Liquid
What is the (g) state symbol?	gas
What is the (aq) state symbol?	In aqueous solution
What is the formula for number of moles? (when given concentration and volume)	n=cV
In n=cV what is c?	concentration
in n=cV what is V?	Volume
How do you calculate the percentage composition of an element in any compound?	% mass = mass of element in formula/GFM of compound x 100