Compounds
MgSO4
What is magnesium phosphate?
For the following element, rhodium-103, identify each of the following:
Mass #, Atomic #, # protons, # neutrons, # electrons
What is mass # 103, atomic #45, protons 45, neutrons 58, and electrons 45?
These 2 things all combustion reactions have in common.
What is oxygen gas as a reactant and exothermic?
Given the following equation, this many moles of O2 are formed from 1.65 moles of KClO3.
KClO3 --> KCl + O2
What is 2.48 mol O2?
Titration reactions between an acid and a base produce these two products.
What is water and salt (ionic compound)?
pentasulfur nonoxide
What is S5O9?
2 part question:
1) Number of valence electrons in the following electron configuration: 1s22s22p63s23p64s23d104p2
2) What element is this?
What is 4 valence electrons?
What is germanium?Predict the product given the following reactants, and then balance the reaction:
Fe(III) + Mn(NO3)4 -->
Fe(III) + Mn(NO3)4 --> No Reaction
Some cars can use butane (C4H10) as fuel:
C4H10 + O2 --> CO2 + H2O
This many grams of CO2 are produced from the combustion of 100. grams of butane.
What is 303 g CO2?
1.5 grams of nitrogen gas is pumped into a balloon at STP, what volume (in liters) would the balloon be after the nitrogen is pumped in? What law did you use to solve this?
What is 1.2 L, and ideal or Avogadro's gas law?
Ti(OH)4
What is titanium (IV) oxide?
Place the following elements in order of increasing electronegativity.
Sb, S, Sr, Se, Si, Sn
What is Sr, Sn, Sb, Se, Si, S?
Balance the following reaction and determine the reaction type:
C7H16 +O2 --> CO2 + H2O
What is C7H16 + 11 O2 -->7 CO2 + 8H2O and combustion of a hydrocarbon?
Potassium permanganate is produced commercially by this reaction:
K2MnO4(aq) + Cl2(g) --> KMnO4(s) + KCl(aq)
At STP this volume of chlorine gas is required to produce 10.0 g of KMnO4. *Assume K2MnO4 is in excess.
What is 0.709 L of Cl2?
Describe how to make a 3.0 M solution of copper (II) chloride.
You would place 403.4 g of copper (II) chloride in a 1-liter volumetric flask and fill to mark with water, then mix to dissolve.
Sn3(PO4)4
What is tin (IV) phosphate?
Put in order of increasing boiling point. Lowest to highest.
CaCl2, RbBr, KCl, CO2, NH3, CH4, CH2CH3CH3CH2, H2O
What is
CH4, CH2CH3CH2, CO2, NH3, H2O, RbBr, KCl, CaCl2?
Predict the products given the following reactants, balance the reaction, and determine the precipitate.
Fe(ClO4)2(aq) + (NH4)3PO4(aq) -->
What is 3 Fe(ClO4)2(aq) + 2 (NH4)3PO4(aq) -->
1 Fe3(PO4)2(s) + 6 NH4ClO4(aq) and Fe3(PO4)2 is the precipitate?
Given the following equation:
Al2(SO3)3 + NaOH --> Na2SO3 + Al(OH)3
If 10.0 g of Al2(SO3)3 is reacted with 10.0 g of NaOH, the limiting reactant would be ______ and the theoretical yield of sodium sulfite would be _______.
What is 12.85 g Na2SO3?
A 25.0 mL solution of hydrochloric acid is titrated with a 2.0 molar solution of potassium hydroxide. Students fill the buret with the 2.0 molar solution of potassium hydroxide to the 0.25 mL mark and then begin the titration. They reach the end point (solution turns light pink) of the titration and record the volume as 26.29 mL. Determine the concentration of the hydrochloric acid.
What is 2.08 M HCl?
Name the compound: W(Cr2O7)2
What is tungsten (IV) dichromate?
Put the following elements in order of increasing radius (smallest to largest):
P3-, Rb+, Cs+, Ca2+, Cl-, Al3+
What is Al3+, Ca2+, Cl-, P3-, Rb+, Cs+?
Determine the substance oxidized, the substance reduced, the oxidizing agent, the reducing agent, and then write the half reactions for the following reaction:
Au + Fe3+ → Fe2+ + Au3+
What is Au is oxidized, Fe3+ is reduced, Fe3+ is the oxidizing agent, Au is the reducing agent,
Fe3+ + 1e- --> Fe2+ is the reduction half reaction,
and Au --> Au3+ + 3e- is the oxidation half reaction.
A 3.25 gram sample of solid calcium carbide (CaC2) reacts with water to produce acetylene gas (C2H2) and aqueous calcium hydroxide. If the acetylene was collected over water at 17ºC and 740.0 mmHg, this many milliliters of acetylene are produced.
What is 1240 mL acetylene?
Find the density (in g/L) of a 2.5 mole sample of gas X at 25°C and 1.5 atm, if its molar mass is 32 g/mol.
What is 1.95 g/L?