315 Answered Questions for the topic General Chemistry

General Chemistry Chemistry

11/28/17

Identify the conjugate acid-base pairs in each of the following
a. HF +H2O ↔ H30+ + F-   b. HNO3 + OH- ↔ H2O + NO-3
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11/28/17

Chemistry Homework
Write the cell notation for an electrochemical cell consisting of an anode where Cr2+(aq) is oxidized to Cr3+(aq) at a platinum electrode and a cathode where Fe3+(aq) is reduced to Fe2+(aq) at a... more
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11/16/17

If 8 ml of 0.3 M HCL solution is mixed with 12 ml of distilled water calculate the pH of the diluted solution?
please show your working
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11/14/17

chemistry prelab question
Potassium permanganate (KMnO4) is the oxidizing agent and sodium oxalate (Na2C2O4) is the reducing agent.a. Manganese (Mn) is reduced.b. Carbon (C) is oxidized.   2KMnO4(aq) + 5Na2C2O4(aq) +... more
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General Chemistry Chemistry Ap Chemistry

10/22/17

When aqueous solutions of potassium fluoride and hydrochloric acid are mixed, an aqueous solution of potassium chloride and hydrofluoric acid results
Write the net ionic equation for the reaction.(Use the solubility rules provided in the OWL Preparation Page to determine the solubility of compounds.)Use H+ for the hydronium ion.
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General Chemistry Chemistry

10/22/17

When solid Ni metal is put into an aqueous solution of Pb(NO3)2, solid Pb metal and a solution of Ni(NO3)2 result
. Write the net ionic equation for the reaction
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General Chemistry

10/18/17

Calculate the RMS speed of hydrogen molecules at 25 C.
Calculate the RMS speed of hydrogen molecules at 25 C.
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General Chemistry

10/18/17

How much heat is required to raise the temperature of 1 kg of ice at -30° C to steam that is 110° C?
How much heat is required to raise the temperature of 1 kg of ice at -30° C to steam that is 110° C?
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General Chemistry

10/16/17

number of molecules in 60g of NO2
 I need help on my chemistry homework for college
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General Chemistry

09/18/17

Calculating acetate buffer's pH and the amount of chemicals required to make it.
1. How many milliliters of 0.1M CH3COOH(pKa=4.75) and 0.1M CH3COONa does it take to make 400 milliliters of 0.1M pH 4.5 acetate buffer? 2. What will be buffer solution's pH, when 10mL of 1M NaOH is... more
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General Chemistry Chemistry

09/13/17

Help with Chemistry problem
How many grams of carbon dioxide can form when a mixture of 4.41 g propane (C3H8) and 6.40 g of oxygen (O2) is ignited, assuming complete combustion to form carbon dioxide and water. The balanced... more
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General Chemistry Chemistry Mass

08/31/17

What mass of oxygen gas is produced by the reaction of 5.2 g of water? Be sure to have the correct # of sig figs.
Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water (H2O) and carbon dioxide (CO2) chemically react to form the simple sugar glucose... more
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General Chemistry

08/07/17

a sample of hydrogen
The substance hydrogen has the following properties:normal melting point:14.0 Knormal boiling point:20.3 Ktriple point:7.1×10-2 atm, 13.9 Kcritical point:12.8 atm, 33.2 KA sample of hydrogen at a... more
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05/22/17

Give the units for the rate constants for the following rate law
Give the units for the rate constants for the following rate law:Rate = k[A]/[B].Taking into account that sometimes the other concentration units may be used (e.g. NIST Chemical Kinetics Database... more
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General Chemistry

05/06/17

how many atoms are in 3.2 moles of sodium chloride
 this question is based on chemistry and i dont understand it
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General Chemistry Chemistry

04/19/17

Why does pH affect the solubility of BaF2 but not that of BaCl2
 Just a brief explanation. 
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General Chemistry

04/18/17

An electron traveling at 5.3×105 m/s has an uncertainty in its velocity of 2.17×105 m/s .
What is the uncertainty in its position?
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General Chemistry Chemistry Chemistry Conversion

04/13/17

how many potassium atoms are in 89.3 grams of potassium carbonate
how many potassium atoms are in 89.3 grams of potassium carbonate
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General Chemistry

04/10/17

Which will experience the greater effective nuclear charge?
The electrons in the n=3 shell in Ar or the n=3 shell in Kr? And which will be closer to the nucleus?
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General Chemistry

04/07/17

Limiting reactants
Liquid hexane CH3CH24CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 2.6 g of hexane is mixed with 5.29 g of oxygen. Calculate the maximum... more
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General Chemistry

04/03/17

What is the characteristic wavelength of this electron? (Mass of electron is 9.1094*10^-31 kg)
The electron microscope has been widely used to obtain highly magnified images of biological and other types of materials. When an electron is accelerated through a particular potential field, it... more
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General Chemistry

04/03/17

If the detector is capturing 3.2*10^8 photons per sec at this wavelength, what is the total energy of the photons detected in 1 hour?
A stellar object is emitting radiation at 3.60 mm. 
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General Chemistry

04/03/17

Calculate the energy of the photons emitted by the AM radio station.
An AM radio station broadcasts at 1020 kHz. 
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General Chemistry

04/03/17

What distance does electromagnetic radiation travel in 0.47 ps?
I tried to multiply (3E8*4.7E-13) and mastering chemistry told me it was wrong. I dont know what I did Wrong. 
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General Chemistry Chemistry Inorganic Chemistry

04/03/17

How to find the Kp values?
4) Carbon disulfide is a foul smelling solvent that dissolves sulfur and other nonpolar substances. It can be made by heating sulfur in an atmosphere of methane. 4CH4 (g) + S8 (s) ⇔ 4CS2 (g) + 8 H2... more
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