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Anonymous
timer Asked: Nov 26th, 2018
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Question description

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  1. How does the classification “strong electrolyte” and/or “weak electrolyte” relate to the solubility of a substance?
  2. Complete the table:
  1. Write the complete balanced molecular and net ionic equations, identify the type(s) of chemical reactions:
    1. The reaction of sulfuric acid with elemental copper produces sulfur dioxide, water and copper (II) sulfate.
    2. Potassium hydrogen carbonate decomposing into a metal oxide, and hydrogen carbonate.
    3. A solution of sodium carbonate is poured into a solution of potassium hydroxide
    4. Solutions of silver nitrate and lithium bromide are mixed
  1. Calculate the mass (in kg) of water produced from the combustion of 1.0 gallon (3.8 L) of gasoline (C8H18). The density of gasoline is 0.79 g/mL.
  1. Silicon nitride (Si3N4) is made by a combining Si and nitrogen gas (N2) at a high temperature. How much (in g) Si is needed to react with an excess of nitrogen gas to prepare 125 g of silicon nitride if the percent yield of the reaction is 95.0%?
  1. A 0.5998g sample of a new compound with a molar mass of 93.12 g/mol was analyzed and found to have 0.2322 g of carbon, some hydrogen, and 0.3091 g of oxygen. What is the formula for the compound?
  1. The combustion of 3.42 g of a compound is known to contain only nitrogen and hydrogen gave 9.82 g of NO2 and 3.85 g of water. Name the compound.
  1. A compound with a known molecular weight (146.99 g/mol) that contains only C, H, and Cl was studied by combustion analysis. When a 0.367 g sample was combusted, 0.659 g of CO2 and 0.0892 g of H2O formed. What are the empirical and molecular formulas?

Tutor Answer

Fleming51
School: New York University

Attached.

American River College
vwheaton

Science & Engineering Division
chem. 310

Chemistry Department
fall 2018

SCHOOL CLOSING/THANKSGIVING HOMEWORK
This assignment is to be completed showing all work and final results clearly, and indicating all
resources used. This is DUE MW=mon, nov 26; TTH=tues, nov 27 in lecture.
Information Section:

LAST NAME:

__________________________________

First Name:

__________________________________

LAB DAY:
__________________________________
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1. How does the classification “strong electrolyte” and/or “weak electrolyte” relate to the solubility of a
substance?

A strong or a weak electrolyte determination is based on the level of dissociation in a solution. A strong
electrolyte completely dissociates while a weak electrolyte partially dissociates. Whether or not a
substance dissolves in an aqueous solution is not a determining factor in its strength. An electrolyte may
have low solubility in water but be a strong electrolyte since the small amount that does dissolve
completely dissociates. In other words, there is a difference between dissolution and dissociation.

2. Complete the table:
Chemical Name

Chemical Formula Cation Formula

Anion Name

Total number of
atoms in the
formula

Stannic Hydroxide

Sn(OH)4

Sn+4

Hydroxi...

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Anonymous
Awesome! Exactly what I wanted.

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