Chemistry: Study Guide

* Question 1
10 out of 10 points | | | According to VSEPR theory, which one of the following molecules should have a bent shape?Answer | | | | | Selected Answer: | Cl2O | | | | | * Question 2
10 out of 10 points | | | According to the VSEPR theory, the molecular shape of SiCl4 isAnswer | | | | | Selected Answer: | tetrahedral. | | | | | * Question 3
10 out of 10 points | | | According to the VSEPR theory, the shape of the SO3 molecule isAnswer | | | | | Selected Answer: | trigonal planar. | | | | | * Question 4
10 out of 10 points | | | Balance the following equation using the smallest set of whole numbers, then add together the coefficients. Don't forget to count coefficients of one.

___ Al + ___ H2SO4 → ___ Al2(SO4)3 + ___ H2

The sum of the coefficients isAnswer | | | | | Selected Answer: | 9. | | | | | * Question 5
10 out of 10 points | | | Consider the species Cl2+, Cl2, and Cl2−. Which of these species will be paramagnetic?Answer | | | | | Selected Answer: | Cl2+ and Cl2− | | | | | * Question 6
10 out of 10 points | | | How many O atoms are there in 51.4 g CaSO4?Answer | | | | | Selected Answer: | 9.09 × 1023 | | | | | * Question 7
10 out of 10 points | | | How many covalent bonds will a nitrogen atom usually form?Answer | | | | | Selected Answer: | 3 | | | | | * Question 8
10 out of 10 points | | | How many grams of Cl2 can be prepared from the reaction of 16.0 g of MnO2 and 30.0 g of HCl according to the following chemical equation?

MnO2 + 4HCl → MnCl2 + Cl2 + 2H2OAnswer | | | | | Selected Answer: | 13.0G | | | | | * Question 9
10 out of 10 points | | | How many grams of sodium are there in 10. g of sodium sulfate, Na2SO4?Answer | | | | | Selected Answer: | 3.2 | | | | | * Question 10
10 out of 10 points |