J.R. S.

09/11/19

You and you're lab partner are making the 5.0% salt solution needed in this experiment. Why will this procedure not work?

Your lab partner, who is fond of cutting corners, suggests that you can calculate the density quicker than the procedure in the lab. He/She places a beaker on the scale and tares it. Now he/she... more

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Chemistry

09/11/19

Dalton's Law of Partial Pressures

Two gases are contained in gas bulbs connected by a valve. Gas A is present in a 1 L bulb at a pressure of 818 torr. Gas B exerts a pressure 328 torr in a 1 liter bulb. The valve is opened and... more

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Chemistry Mass

09/11/19

Chem: change in mass

Explain what it means to have a change in mass.

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Chemistry

09/11/19

chemistry radioactive decay

The radioactive isotope 234Th has a half-life of 24.1 days. If a sample contains 40.7 mg of 234Th, what mass of the isotope will remain after 38.6 days?

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Math Chemistry

09/10/19

how many grams of oxygen are contained in 10.5 liters of oxygen measured over water at 25 C and 740 mm Hg? Vapor pressure of water at 25 C is 24mm Hg

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Chemistry

09/10/19

_______ is the energy required to lift an object of 102 grams, 100 cm straight up, at a constant speed.

A. A JouleB. Kinetic energyC. Potential energyD. Specific heatE. None of the Above

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Chemistry

09/10/19

The reaction of an acid and a base produces a(n)_______ and water.

A. titrationB. molar solutionC. dilute solutionD. mixtureE. None of the Above

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Chemistry

09/10/19

Calculate the molarity of 101 grams of sucrose, C12H22O11, in 2.50 liters of solution.

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Chemistry

09/10/19

Copper is now available which is 99.99999% pure. At this purity, what mass of wire will contain 1.0g of impurities?

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Answers •1

Chemistry

09/10/19

Osmium is the densest element known, with a density of 22.6g/ml. Turkey has the world's largest reserve of osmium, at 127,000 tons. How much space does this reserve occupy?

(1 ton= 907 kg).

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Chemistry

09/10/19

A 129 g piece of metal is heated to 292 ∘C and dropped into 90.0 g of water at 26.0 ∘C. If the final temperature of the water and metal is 58.0 ∘C, what is the specific heat of the metal?

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Chemistry

09/08/19

chemistry question

How many grams of CaSO4 will precipitate if 5.64 mL of 0.0986 M H2SO4 is mixed with 25.00 mL of 0.050 M Ca(OH)2?

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Chemistry

09/08/19

What is the rate when the initial concentration of A = 1.67 mol/L and that of B = 1.18 mol/L

For the reaction, A(g) + B(g) => AB(g), the rate is 0.417 mol/L.s when the initial concentrations of both A and B are 2.00 mol/L. If the reaction is first order in A and second order in B, what... more

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Chemistry

09/08/19

Given the reaction orders based on the data given below.

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is __________ order in A, ________ order in B, ________ order in C and ________ order... more

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Chemistry

09/08/19

Given the data below, find k.

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, Experiment Initial conc of A, mol/L Initial conc of B, mol/L Initial conc of C, mol/L Initial rate,... more

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Math Chemistry Organic Chemistry

09/08/19

The density of copper is 8.92 g/cm cubed A.what is the mass of 25.0 cm cubed of copper B.what is the volume of 454 g of copper

its 2 questions from my chemistry I spent so long trying to figure out and do the work and is still confused please help and can you provide the work bc idk how to set it up

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Answers •3

Chemistry

09/08/19

Given the data below, find the value of k.

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F Experiment Initial conc of A, mol/L Initial conc of B, mol/L Initial conc of C, mol/L Initial rate,... more

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Chemistry

09/08/19

The reaction C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol. At 600.0 K, the rate constant, 𝑘, is 6.1×10^−8 s^−1. What is the value of the rate constant at 805.0 K?

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Chemistry

09/08/19

A certain reaction has an activation energy of 72.51 kJ/mol. At what Kelvin temperature will the reaction proceed 5.00 times faster than it did at 325 K?

I can't seem to solve this one, some help would be great.

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Chemistry

09/08/19

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is _____ order in A, _ order in B, _ order in C and ___ order overall.

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is _____________ order in A, _______________ order in B, ______________ order in C and ______________ order... more

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Chemistry

09/08/19

For the reaction 4A(g) + 3B(g) ---> 2C(g), the following data were obtained at constant temperature. Determine the value of k for the reaction.

For the reaction, 4 A(g) + 3 B(g) => 2 C(g), the following data were obtained at constant temperature. Experiment Initial A conc., mol/L Initial B conc., mol/L Initial Rate,... more

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Chemistry

09/07/19

1.66 g H2 is allowed to react with 10.3 g N2, producing 2.59 g NH3

Part A) What is the theoretical yield in grams for this reaction under the given conditions?Part B) What is the percent yield for this reaction under the given conditions?

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Chemistry

09/07/19

Convert 87 um to mm

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Chemistry

09/07/19

How much salt is required to make 250g of a 5.0% saline solution?

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Answers •1

Chemistry

09/07/19

A common antiseptic is 2% hydrogen peroxide. How much antiseptic can be made from 80g of hydrogen peroxide?

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Answers •1

You and you're lab partner are making the 5.0% salt solution needed in this experiment. Why will this procedure not work?

Dalton's Law of Partial Pressures

Chem: change in mass

chemistry radioactive decay

how many grams of oxygen are contained in 10.5 liters of oxygen measured over water at 25 C and 740 mm Hg? Vapor pressure of water at 25 C is 24mm Hg

_______ is the energy required to lift an object of 102 grams, 100 cm straight up, at a constant speed.

The reaction of an acid and a base produces a(n)_______ and water.

Calculate the molarity of 101 grams of sucrose, C12H22O11, in 2.50 liters of solution.

Copper is now available which is 99.99999% pure. At this purity, what mass of wire will contain 1.0g of impurities?

Osmium is the densest element known, with a density of 22.6g/ml. Turkey has the world's largest reserve of osmium, at 127,000 tons. How much space does this reserve occupy?

A 129 g piece of metal is heated to 292 ∘C and dropped into 90.0 g of water at 26.0 ∘C. If the final temperature of the water and metal is 58.0 ∘C, what is the specific heat of the metal?

chemistry question

What is the rate when the initial concentration of A = 1.67 mol/L and that of B = 1.18 mol/L

Given the reaction orders based on the data given below.

Given the data below, find k.

The density of copper is 8.92 g/cm cubed A.what is the mass of 25.0 cm cubed of copper B.what is the volume of 454 g of copper

Given the data below, find the value of k.

The reaction C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol. At 600.0 K, the rate constant, 𝑘, is 6.1×10^−8 s^−1. What is the value of the rate constant at 805.0 K?

A certain reaction has an activation energy of 72.51 kJ/mol. At what Kelvin temperature will the reaction proceed 5.00 times faster than it did at 325 K?

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is _____ order in A, _ order in B, _ order in C and ___ order overall.

For the reaction 4A(g) + 3B(g) ---> 2C(g), the following data were obtained at constant temperature. Determine the value of k for the reaction.

1.66 g H2 is allowed to react with 10.3 g N2, producing 2.59 g NH3

Convert 87 um to mm

How much salt is required to make 250g of a 5.0% saline solution?

A common antiseptic is 2% hydrogen peroxide. How much antiseptic can be made from 80g of hydrogen peroxide?

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J.R. S.

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You and you're lab partner are making the 5.0% salt solution needed in this experiment. Why will this procedure not work?

Dalton's Law of Partial Pressures

Chem: change in mass

chemistry radioactive decay

how many grams of oxygen are contained in 10.5 liters of oxygen measured over water at 25 C and 740 mm Hg? Vapor pressure of water at 25 C is 24mm Hg

_______ is the energy required to lift an object of 102 grams, 100 cm straight up, at a constant speed.

The reaction of an acid and a base produces a(n)_______ and water.

Calculate the molarity of 101 grams of sucrose, C12H22O11, in 2.50 liters of solution.

Copper is now available which is 99.99999% pure. At this purity, what mass of wire will contain 1.0g of impurities?

Osmium is the densest element known, with a density of 22.6g/ml. Turkey has the world's largest reserve of osmium, at 127,000 tons. How much space does this reserve occupy?

A 129 g piece of metal is heated to 292 ∘C and dropped into 90.0 g of water at 26.0 ∘C. If the final temperature of the water and metal is 58.0 ∘C, what is the specific heat of the metal?

chemistry question

What is the rate when the initial concentration of A = 1.67 mol/L and that of B = 1.18 mol/L

Given the reaction orders based on the data given below.

Given the data below, find k.

The density of copper is 8.92 g/cm cubed A.what is the mass of 25.0 cm cubed of copper B.what is the volume of 454 g of copper

Given the data below, find the value of k.

The reaction C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol. At 600.0 K, the rate constant, 𝑘, is 6.1×10^−8 s^−1. What is the value of the rate constant at 805.0 K?

A certain reaction has an activation energy of 72.51 kJ/mol. At what Kelvin temperature will the reaction proceed 5.00 times faster than it did at 325 K?

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is ___________ order in A, ___________ order in B, _____________ order in C and ___________ order overall.

For the reaction 4A(g) + 3B(g) ---> 2C(g), the following data were obtained at constant temperature. Determine the value of k for the reaction.

1.66 g H2 is allowed to react with 10.3 g N2, producing 2.59 g NH3

Convert 87 um to mm

How much salt is required to make 250g of a 5.0% saline solution?

A common antiseptic is 2% hydrogen peroxide. How much antiseptic can be made from 80g of hydrogen peroxide?

Still looking for help? Get the right answer, fast.

OR

J.R. S.

Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is _____ order in A, _ order in B, _ order in C and ___ order overall.