Convert to mg/L from Molarity

Convert to mg/L using dimensional analysis: 0.01 N Ca+2. Here is additional info: salt is CaCl2 1M HCO3 0.02 N H2SO4 0.02 M SO4 2- (i.e)sulfate ion

Isothermal expansion

An ideal gas expands isothermally from state A to state B at 300K with an entropy change (ΔSsys) of 50 J/K. When the expansion was performed, the work done by the system was - 6 kJ/K. Was this process reversible or irreversible? Explain.

Acid-Base Reactions: Names to Formulas from acid base reactions

What would be the proper balanced molecular and net ionic equations for each of these neutralization reactions? - solid chromium (III) hydroxide reacts with nitric acid - aqueous hypochlorous acid and aqueous calcium hydroxide react - aqueous acetic acid is neutralized by aqueous potassium hydroxide

Oxidation Numers (Oxidation States)

How do I find out the oxidation numbers of: - Ti in TiO2 - N in N2H4 - Cr in Cr2O7 2- <-- the 2- is above the margin, in the same place as if it was to the power of 2- - N in HNO2 - C in C204 2- <-- same as the Cr2O7 - Sn in SnCl3 - <-- same as others, possible -1?

Oxidizing and Reducing Agents

Identifying oxidizing and reduging agents. H2O2 (aq) + ClO2 (aq) --> ClO2 - (aq) + 02 (g)

question-1

The elements argon and potassium have atomic weights 39.95 and 39.10 respectively. What problem if any does this pose for a periodic table in which the elements are arranged in order of increasing atomic weight? What is the cause of the problem?

Calculate mass, mole fraction and avg. molecular weight of air

Calculate the constituent (a) mass, (b) mole fraction (c)average molecular weight of air at 25 degree centigrade, 1 atm, and molar density of all listed gases is 24.5 L/mol, and volume air is given to be 100 L. Name Volume fraction N2 0.7808 O2 0.2095 Ar 0.0093 CO2 315 ...continues

Number of grams needed for molar solution

How many grams of sodium nitrate is required to make 400 ml of 1.2 molar solution

Grams produced based on temperature and pressure

Suppose 5.0 liters of Nitrogen (diatomic) is at a temperature of 40 degrees C and a pressure of 1.5 ATM. How many grams are present?

Molecular Formula of a Compound from Percent Composition and Molar Mass

What is the molecular formula of a compund that contains 42.87%carbon, 3.598% hydrogen, 25.00% nitrogen, and 28.55% oxygen and has a molar mass between 2010 and 2020 AMU?