chapter one
11.6+12.07
What is 23.7?
V(CO3)2
What is vanadium (IV) Carbonate?
The molar mass of H12Cl3KMgO6
What is 277.86g/mol
There are __________ mol of carbon atoms in 4 mol C4H8O2.
What is 16 mol C?
The density of a piece of silver is 10.5 g/cm³. If the volume of the silver piece is 0.00250 L, what is its mass?
What is 26.3g?
HNO2
What is nitrous acid?
_Fe2(CO3)3 + _H2SO4 → _Fe2(SO4)3 + _H2O + _CO2
What is 1,3,1,3,3
How many grams of H2O are produced when 25.0 g of H2 reacts with excess O2?
What is 223 g H2O?
The SI unit for mass
What is kg?
An element that appears in the upper right corner of the periodic table is
What is a nonmetal?
molecules in 6.2 g of H2O?
What is 2.1 x 1023 molecules?
You would need _____ grams of NaOH to completely react with 25.0 g of CO2
2NaOH + CO2 → Na2CO3 + H2O
What is 45.4 g?
cooking an egg is a ________ change
What is a chemical change?
There are __________ protons, __________ neutrons, and __________ electrons in 238U+5.
What is 92, 146, and 87?
The molarity (M) of an aqueous solution containing 18.0 g of glucose (C₆H₁₂O₆) in 250.0 mL of solution
What is 0.400 M
If 500.0 mL of 0.750 M KOH is mixed with excess HCl, _____ moles of KCl can be formed
KOH(aq) + HCl(aq) → KCl(aq) + H2O(l)
What is 0.375 mol KCl?
5.82 g/cm³ = ________ kg/m³
What is 5,820 kg/m3?
Element X has three naturally occurring isotopes. Isotope ¹²⁵X has a mass of 124.9 amu and an abundance of 72.50%, isotope ¹²³X has a mass of 123.0 amu and an abundance of 15.50%, and isotope ¹²²X has a mass of 121.9 amu and an abundance of 12.00%. The average atomic mass of element X is
What is 124.2 amu?
a 100g white powder sample contains 43.64g of Phosphorus and 56.36g of oxygen by mass. The empirical formula is
What is P2O5?
In a laboratory experiment, a student heats 50.0 g of CaCO₃ and determines that 24.5 g of CaO is formed. The percentage yield of the reaction is
CaCO3(s) → heat → CaO(s) + CO2(g)
What is 87.5%?