Surprise
What is the name rule for acids (what do you replace the endings with and when to add hydro)?
-ide ending will have hydro- prefix
-ite is replaced with -ous
-ate is replaced with -ic
A reaction with a·calculated yield of 9.23g produced 7.89g of product. What is the percent yield for this reaction?
what is 85.5%
True or False: A single bond has pi bonds
false
the coefficients in the balanced equation:
H2 + O2 --> H2O
what is 2,1,2
what is the unit that molarity is measured in?
mols/L
Which of the following would be most likely to be miscible with water?
A) Br2
B) C2Cl4
C) CBr4
D) C5H12
E) CH3NH2
E
the limiting reagent when 3 mol C reacts with 1 mol H, using the equation below
4C + 2 H2 --> 4CH
what is H2
What hybridization does XeF2 have?
sp3d
the balanced equation for when C4H10 undergoes combustion
what is 2 C4H10 + 13 O2 -> 8 CO2 + 10 H2O
the molarity of a 0.3L solution containing 0.5mol NaCl
what is 1.67M
How many pi and sigmas bonds are present in CH3COOH?
1 pi bond, 7 sigma bonds
limiting reactant when 34g of aluminum reacts with 39g chlorine gas to form aluminum chloride via the following reaction:
2 Al + 3 Cl2 --> 2 AlCl3
what is Cl2
What hybridization does NF3 have?
sp3
the coefficients in the balanced equation:
Ca + H2O --> Ca(OH)2 + H2
what is 1,2,1,1
The molarity of a solution that was prepared by dissolving 14.2g of NaNO3(molar mass = 85.0g/mol) in enough water to make 350 mL of solution
what is 0.477M
the balanced equation for when C8H18 undergoes combustion
2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O
the percent yield if, given the equation below, 305g of AgNO3 react to form 23.7g of Mg(NO3)2
2 AgNO3 + MgCl2 --> 2 AgCl + Mg(NO3)2
what is 17.8%
Which of the following is/are true according to molecular orbital theory? Select all that apply. Use the diagrams.
A) C22- should have a stronger bond than C2
B) C22+ should be diamagnetic.
C) O22+ should have a bond order of 3
A & C
the balanced equation for when C8H20O2N3 undergoes combustion
what is C8H20O2N3 + 15 O2 --> 8 CO2 + 10 H2O + 3 NO2
A 0.674M cobalt(II) chloride (CoCl2) solution is prepared with a total volume of 0.0750L. The molecular weight of CoCl2 is 128.9g/mol. What mass (in g) of CoCl2 is needed for the solution?
what is 6.52g
using the equation below, find the percent yield if the reaction is carried out in a glass container that has a mass of 14.7 grams, the zinc and the glass container has a mass of 29.5 grams, and the glass container and the zinc chloride together have a mass of 37.5 grams
Zn + 2 HCl --> ZnCl2 + H2
what is 74%
the limiting reagent when when 50 NBr3 molecules and 57 NaOH molecules react in the reaction below:
2 NBr3 + 3 NaOH ---> N2 + 3 NaBr + 3 HOBr
what is NaOH
Which of the following is/are true according to valence bond theory? Select all that apply.
A) The hybridization C atom in formic acid, HCOOH is sp
B) The S atom in SF6 present sp3d2 hybridization and its molecular geometry is octahedral.
C) The hybridization of each C CH3CH2OH (from left to right) is, 1st C: sp3, 2nd C: sp2
D) The hybridization of the N atom in NH3 is sp3
E) The hybridization of the C atom in HCN is sp
B, D, & E
the coefficients in the balanced equation:
CO2 + H2O --> C2H5OH + O2
2,3,1,3
The mass of NaBr (molar mass = 102.9 g/mol), in grams, needed to prepare 700 ml of 0.230 M NaBr solution
what is 16.6g