J.R. S.

04/25/19

container of gas...

A 22.4 L container at 298 K contains 50% He, 30% Ne, and 20% Ar. What is the partial pressure of each gas if the total pressure of the container is 1.00 atm?

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Chemistry

04/25/19

A chemist isolated a gas in a glass bulb with a volume of 255 mL at a temperature of 25.0 Celsius and a pressure (in the bulb) of 10.0 torr. The gas weighed 12.1 mg. What is the molecular mass of... more

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Chemistry

04/25/19

uranium hexafluoride

Uranium hexafluoride is a solid at room temperature, but it boils at 56 Celsius. Determine the density of uranium hexafluoride at 60 Celsius and 0.984 atm.

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Chemistry

04/25/19

How many moles of glucose (C6H12O6) are contained in 250mL of a 1.5 glucose solution?

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Math Chemistry

04/25/19

What is the final concentration of a solution prepared by diluting 25.0 mL of 12.0 M HCl to a final volume of 1.20 L?

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Chemistry

04/25/19

How is it that on a salt container, 1 serving is 1.5g (1500mg), but the sodium content per serving is only 590mg?

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Chemistry

04/25/19

What are the half-reactions of MnO4 {-} + H2C2O4 + H {+} = Mn {2+} + CO2 + H2O?

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Chemistry

04/25/19

Chemsitry - Gas of Chlorine

Chlorine diffuses 2.19 times faster than gas Q. What is the M of gas Q?

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Chemistry

04/25/19

How much time should a bumper be immersed in Chromium vat?

To save on production costs, most automobile bumpers are never coated with more than 150 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat? Give your... more

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Chemistry

04/25/19

Chemistry - Molar Mass

Analysis of a volatile liquid shows it contatins 62.04% carbon. 10.41% hydrogen and some oxygen by mass. At 150.0 degrees Celsius and 760.0 mm Hg, 500.0 mL of the vapor has a mass of 1.673 g. What... more

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Chemistry

04/25/19

Chemistry - Volume CO2

Compute the volume in mL of 80.018 g carbon dioxide at STP.

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Chemistry

04/25/19

Chemistry - Gold

How many liters of oxygen collected over H2O and measured at 27.0 degrees Celsius and 745.0 mm Hg can be prepared by decomposing 4.421 g gold (I) oxide (a noble metal oxide)? The vapor pressure of... more

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Chemistry

04/25/19

Chemistry - Oxygen

Oxygen gas has the density of 1.43 g/L at STP. What will be the mass of 500.0 mL of oxygen at 21.8 degrees Celsius and 750.8 mm Hg?

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Chemistry

04/25/19

Chemistry - STP

What is the density of fluorine gas at STP?

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Chemistry

04/25/19

Chemistry- Diffusion

Calculate the ratio of the rates of diffusion of neon to chlorine at room temperature. Which gas diffuses faster? How much faster?

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Chemistry

04/25/19

Finding the mass of nickel and chromium?

Electroplating is a widely used process. One of the most popular electroplating processes involves the plating of two metals, nickel and chromium, in separate vats. Nickel is plated first because... more

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Chemistry

04/25/19

Hello, I’m here because I need help can you please help me?

calculate the amount in grams of zinc sulfate obtained by reacting 10 g of elemental zinc with 100 ml of 2m sulfuric acid

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Chemistry

04/25/19

Write a net ionic equation for the reaction that occurs when excess aqueous nitric acid is combined with solid chromium(II) carbonate.

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Chemistry

04/25/19

Determining the Mass of a Product of a Gas Phase Reaction

How many grams of iron are needed to produce 11.7 L of hydrogen gas according to the following reaction at 25 °C and 1 atm? iron (s) + hydrochloric acid(aq) iron(II)... more

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Chemistry

04/24/19

Chemistry question stoichiometry

Using the following equation how many grams of carbon dioxide do you get from 816.0g of glucose: C6H12O6 + 6O2 → 6CO2 + 6H2O + energyGive answer as #unit space nam

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Chemistry

04/24/19