05/02/19

What’s the decrease in temperature when 5.00 L at 21.0C is compressed to 2.50L?
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05/02/19

How many atoms are there before and after the chemical reaction N2 + 2O2 --> 2NO2
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05/02/19

If a gas is pressurized from 10.0 ATM to 12.0 ATM and the final temperature is at standard temperature (273.15 K), what was the initial temperature of gas?
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05/02/19

In which state of matter out of solid, liquid, and gas particles have the least force of attraction?
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05/02/19

A container holds three gases A,B,C. The partial pressure (PP) of B is three times as much as the PP of A. The PP of C is half the PP of A. The total pressure inside the container is 18.9 atm.
Find the PP’s of all three gases.
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05/02/19

At what temperature in Kelvin will 0.0500 miles of chlorine exert a pressure of 1.92 atm at a volume of 750.0mL? SHOW WORK
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05/02/19

Which element has the chemical symbol O?
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05/02/19

What is the trend of the melting and boiling point of hydrocarbons and their derivatives?
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05/02/19

If nisin is amphiphilic, why is there 4+ charge on it?
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05/02/19

Do you know what type of substances are more frequent in our world (mixture or pure)?
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05/02/19

At what temperature in kelvin will 5.00 grams of CO2 exert a pressure of 4.65 atm at a volume of 0.250 liters? PLEASE SHOW WORK
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05/02/19

1/2 Life Problem
Sodium-24 has a half-life of 15 hours.How much sodium-24 will remain in a15.0 g sample after 60 hours?
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05/02/19

Calculate the volume of 16 grams of Sulfur Dioxide at STP
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05/02/19

if 25.06 grams of magnesium react with 70.87 grams of hydrochloric acid, which one is the limiting reactiant?
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05/02/19

Chemistry help...
An aqueous solution at 25c has a concentration of 0.0015. Calculate H3O+ the concentration. Be sure your answer has 2 significant digits.
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05/02/19

Chemistry........
An aqueous solution at 25°C has a H3O+ concentration of ×2.610−9M. Calculate the OH− concentration. Be sure your answer has 2 significant digits. 
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05/01/19

A 12 L cylinder filled with a gas at 15.5 Kelvin. If the temperature of the Gas in increased to 25.0 kelvin what is the new volume of the Gas? Assume constant pressure. PLEASE SHOW WORK
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05/01/19

A container of carbon dioxide has a pressure of 775mm Hg at 325k. If the temperature is decreased to 295k what is the pressure of the gas in the container? Please show work!!
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05/01/19

How many grams of C are needed to produce 1.00 × 109 g of Fe?
A simplified version of the processing of iron ore into iron metal is as follows:2Fe2O3 + 3C → 4Fe + 3CO2How many grams of C are needed to produce 1.00 × 109 g of Fe?
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05/01/19

If 1.82 × 1013 g of NO2 enter the atmosphere every year due to human activities, potentially how many grams of HNO3 can be produced annually?
Acid rain is caused by the reaction of nonmetal oxides with water in the atmosphere. One such reaction involves nitrogen dioxide (NO2) and produces nitric acid (HNO3):3NO2 + H2O → 2HNO3 + NOIf 1.82... more
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05/01/19

How many grams of HCl can a 200 mg dose of Mg(OH)2 neutralize?
Antacids are bases that neutralize acids in the digestive tract. Magnesium hydroxide [Mg(OH)2] is one such antacid. It reacts with hydrochloric acid in the stomach according to the following... more
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05/01/19

A 0.4kg water at 10 degrees is poured into a beaker of 0.5kg of water at 90 degrees. What is the final temperature of the 0.9kg of water?
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05/01/19

The smallest part of a compound that still is that compound is a
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05/01/19

Mixtures of Ammonia and Oxygen
A mixture of ammonia and oxygen is prepared by combining 300 mL of NH3 (measured at 759 torr and 28 Celsius) with 220 mL of O2 (measured at 780 torr and 50 Celsius). How many milliliters of N2... more
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05/01/19

What are the products formed by the reaction of zinc sulphate with barium nitrate?
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