QUESTION 1 1.Whatis the nameofthecompoundwith theformulaCaSO 4 ? a. Calciumselenate b. Calciumsulfide c. Calciumsulfate d. Cadmiumsulfide 1 points QUESTION 2 1.What is the product of the reaction...

QUESTION 1

1.Whatis the nameofthecompoundwith theformulaCaSO₄?

1 points

QUESTION 2

1.What is the product of the reaction between aqueous solutions of lead nitrate and sodium carbonate. ?

1 points

QUESTION 3

1.Whichbondis morepolar,C-NorBr-S? and which way does the dipole point?

1 points

QUESTION 4

1.What VSEPR shape doesSiCl₄have?

1 points

QUESTION 5

1.WhatVSEPRshapedoesBF₃have?

1 points

QUESTION 6

1.Whichof these depicts the direction of the dipole moment in NH₃?

1 points

QUESTION 7

1.What is the name of CH₃CH(CH₃)CH₂CH₂CH₂CH₃?

1 points

QUESTION 8

1.What is thenameof CH₂=CHCH₂CH₂CH₃?

1 points

QUESTION 9

1.Whatis the VSEPRshapeof themoleculeshown?

1 points

QUESTION 10

1.Which of the following depicts the dipole moment ofnitrosylchloride?

1 points

QUESTION 11

1.Whatis theIUPACnameof thefollowingcompound?

1 points

QUESTION 12

1.Whatis theIUPACnameof thefollowingcompound?

1 points

QUESTION 13

1.Whatis theIUPACnameof thiscompound?

1 points

QUESTION 14

1.Whichof thefollowingstructuresis methylbutanoate?

1 points

QUESTION 15

1.Which of the following is 3-methylcyclopentanal?

1 points

QUESTION 16

1.What is the molar mass(g/mol)of codeine, C₁₈H₂₁NO₃? (Give your answer to 4 significant figures, do not round off atomic masses, do not put g/mol in your answer, i.e. just write the number)

1 points

QUESTION 17

1.What is the molar mass (g/mol) of aluminiumsulfate, Al₂(SO₄)₃? (Give your answer to 4 significant figures, do not round off atomic masses, do not put g/mol in your answer, i.e just write the number)

1 points

QUESTION 18

1.How many molesare there in 80.37 g of NaCl? (give your answer to four significant figures, do not round off atomic masses, do not write mol in your answer - just the number)

2 points

QUESTION 19

1.How many moles are there in 57.25 g of citric acid, C₆H₈O₇? (give your answer to four significant figures, do not roundoff atomic masses, do not put mol in your answer - just the number)

2 points

QUESTION 20

1.How many grams are there in 1.373 x 10⁰moles ofNaHCO₃? (do not round off atomic masses, do not write g in your answer - just the number, give your answer to 4 sig figs)

2 points

QUESTION 21

1.How many grams are there in 6.117mmolof phosphoric acid, H₃PO₄? (do not round off atomic masses, do not write g in your anwer - just the number), give your answer to 4 sig figs

2 points

QUESTION 22

1.What is the concentration(Molar) when 1.039 moles ofHBrare dissolved in 380mLof water? (Give your answer to 3 significant figures, do not write M in your answer - just the number)

1 points

QUESTION 23

1.What is the concentration(Molar) when 8.45 x 10^-5moles of Mg(OH)₂are dissolved in 1215mLof water? (type your answer in as a decimal - don't use scientific notation, do not write M in your answer - just the number). Give your answer to 3 sig figs.

1 points

QUESTION 24

1.Reagent grade hydrochloric acid(HCl)is 38.0%w/v in water. What is the molarity of reagent gradeHCl? (give your answer to 3 significant figures, just put in the number not the M)

2 points

QUESTION 25

1.How many grams ofKBrare needed to make a 0.128 M solution of volume 750mL? (give your answer to 3 significant figures, do not put g in your answer - just the number)

2 points

QUESTION 26

1.How manylitresof 0.435 MKBrsolution are needed to provide 0.717molofKBr? (give your answer to 3 significant figures, do not put L in your answer - just the number)

1 points

QUESTION 27

1.Balance the following chemical equation

Al +H₂SO₄-->Al₂(SO₄)₃+H₂

Put stoichiometric coefficients in. If it is 1 put a 1 into the box (do not leave empty). Use numbers not words, do not include chemical formulae

2 points

QUESTION 28

1.Balance the following chemical equation

C₇H₆O₂+O₂-->CO₂+H₂O

Put stoichiometric coefficients in. If it is a 1 put a 1 in the box (do not leave empty). Put numbers not words in, do not include chemical formulae

2 points

QUESTION 29

1.Balance the following chemical equation

CaO +C -->CaC₂+CO₂

Put stoichiometric coefficients in. If the number is a 1 put a 1 in the box - do not leave blank. Use numbers not words and do not include chemical formulae

2 points

QUESTION 30

1.A colourless liquid is analysed and found tocontain C 59.00%, H 7.15%, N 7.65% and O 26.20%. What is the empirical formula for the compound? [1st]

Do NOT put a 1 after an element if there is 1 of them (write the formula as it would normally be written). Do NOT leave a space between elements.

2 points

QUESTION 31

1.Cyanogen C₂N₂reacts with fluorine gas to produce tetrafluoromethane and nitrogen trifluoride.

Balance the reaction chemical equation:
Cyanogen +Fluorine -->Tetrafluoromethane +Nitrogentrifluoride

Put stoichiometric coefficients in (if it is a 1 put your answer as 1, do not leave blank). Type the number do not write one for 1.

If 250.0 g of cyanogen is reacted with 1180.0 g of fluorine gas which reagent is limiting?(write chemical name)

How much tetrafluoromethane could the reaction produce (in grams)?(Give your answer to 4 significant figures. Do not write g - just the number)

6 points

QUESTION 32

1.You obtain a mysterious white powder from a suspicious looking lecturer. The elemental composition of the powderwas found to be C= 60.00%, H = 4.48%. What is the empirical formula of the compound? (Do not write a 1 if there is 1 of that element, write the formula as it would normally be written, do not leave a space between elements)

2 points

QUESTION 33

1.How much water (mL) must be addedto a 0.723 M solution of lithium carbonate with a volume of 17.7mLso that the final concentration is 0.138 M? (Give your answer to 3 significant figures, do not write mL in your answer - just write the number)