Calculate the mass of aluminum (in grams) of 6.73 moles of aluminum.
What is 182 g Al?
100
The third step to the scientific method.
What is "test the hypothesis by performing controlled experiments"?
100
NO2
What is nitrogen dioxide?
100
Al(s) + H2SO4(aq) --------> Al2(SO4)3(aq) + H2(g)
What is 2 Al(s) + 3 H2SO4 (aq) -------> Al2(SO4)3(aq) + 3 H2(g)?
200
Anything that occupies space and has mass.
What is matter?
200
How many moles of sodium oxide can be synthesized from 4.8 mol of sodium? Balanced equation: 4 Na(s) + O2(g) -------> 2 Na2O(s)
What is 2.4 mol Na2O?
200
To which group or family of elements does Mg belong?
What is group 2A; the alkaline earth metals?
200
Al2O3
What is aluminum oxide?
200
AlBr3 + K2SO4 -------> KBr + Al2(SO4)3
What is 2 AlBr3 + 3 K2SO4 --------> 6 KBr + Al2(SO4)3?
300
Matter is neither created nor destroyed in a chemical reaction.
What is the Law of Conservation of Mass?
300
Determine the number of atoms in a 48.3 g sample of zinc.
What is 4.45 X 10^23 Zn atoms?
300
Classify concrete as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.
What is a heterogeneous mixture?
300
Fe2S3
What is iron (III) sulfide?
300
phosphoric acid (aq) + barium hydroxide (aq) -------> barium phosphate (s) + water
What is 2 H3PO4(aq) + 3 Ba(OH)2(aq) -------> Ba3(PO4)2(s) + 6 H2O(l)
400
A process that results in the release of energy (heat).
What is an exothermic process?
400
How many grams of sodium oxide can be synthesized from 17.4 g of sodium? Assume that there is more than enough oxygen present. Balanced equation: 4 Na(s) + O2(g) -------> 2 Na2O(s)
What is 23.5 g Na2O?
400
Convert 310 K to Fahrenheit.
What is 98.6 degrees F?
400
HI(aq)
What is hydroiodic acid?
400
Solid vanadium (V) oxide reacts with hydrogen gas to form solid vanadium (III) oxide and liquid water.
What is V2O5(s) + 2 H2(g) -------> V2O3(s) + 2 H2O(l)?
500
All samples of a given compound have the same proportions of their constituent element. For example, in every water molecule there is one oxygen atom for every 2 hydrogen atoms.
What is What is the Law of Constant Composition or Law of Definite Proportions?
500
Find the grams of iron in 79.2 g of Fe2O3.
What is 55.4 g Fe?
500
A 55.9-kg person displaces 57.2 L of water when submerged in a water tank. What is the density of the person in grams per cubic centimeter (remember that 1 L = 1000 cm^3)
What is 0.977 g/cm^3?
500
H2SO3(aq)
What is sulfurous acid?
500
C8H18(l) + O2(g) --------> CO2(g) + H2O(g)
What is 2 C8H18(l) + 25 O2(g) --------> 16 CO2(g) + 18 H2O(g)?