09/10/20

I need help solving this problem

The highest temperature ever recorded in California is 134.0 Fahrenheit. What is the temperature in Calvan in Celsius scale??
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09/10/20

I need help solving. Please be detailed

A cube of Al weighs 72.90g and has a density of 2.70 g/ cm^3. What is the length of each side of the cube ?
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09/10/20

I need help solving this, please be detailed

Density of gasoline is 0.850 g/ml.what is the mass of 2.55gal gasoline ?
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09/10/20

I need help solving this

Air weighs about 8.0 lb per 100. Cubic feet.What is the density of air in a) gram per cubic feet b) gram per cubic liter
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09/09/20

If you burn 55.6 g of hydrogen and produce 497 g of water, how much oxygen reacted?
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09/09/20

Trying to find milligrams
How how many milligrams of calcium are in 1.37g of calcium carbonate
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09/09/20

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Use the following balanced equation to answer parts below:3H2 + N2 —> 2NH3Part 1-How many grams of NH3 can be made from 5.10 mol of H2 and excess N2?___ g NH3Part 2-How many grams of NH3 can be... more
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09/09/20

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Potassium superoxide, KO2, reacts with carbon dioxide to form potassium carbonate and oxygen: 4KO2 + 2CO2 —> 2K2CO3 + 3O2This reaction makes potassium superoxide useful in a self-contained... more
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09/09/20

A researcher needed three samples of sodium chloride solution, each with a volume of 0.03510 mL. The total volume needed should be reported as
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09/09/20

Methanol can be produced by the following reaction: CO(g) + 2 H2(g) → CH3OH(g)
with the rate of reaction = (Δ[CH3OH]) ÷ (Δt). If the rate of the reaction is written using the concentration of hydrogen the rate of the reaction = ___.A) -1/2* (Δ[H2]/Δt)B) +2* (Δ[H2]/Δt)C) +... more
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09/09/20

What will be the ∆T when 10500 joules of heat energy are added to 150 grams of water?
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09/08/20

What is the concentration of SO42- in mg/L (ppm) for a solution that is 0.00385 M of K2SO4? Do NOT use scientific notation in your answer.
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09/07/20

12.3g of P4 reacts with cl2 to produce 50.0g of PCl3. what is the percent yield?
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09/07/20

what mass of ammonia can be synthesized from 150g of h2?
Can you please show steps as well? thank you!
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09/07/20

Avogadro's law:

What are the initial and final volume and initial and final amount of gas in this problem?:What volume is occupied by 3.00mol of argon gas at STP?
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09/06/20

HELP A A A A A AAA
Water (2570 gg ) is heated until it just begins to boil. If the water absorbs 4.85×105 JJ of heat in the process, what was the initial temperature of the water?
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09/04/20

Reporting in scientific notation using e, use your calculator to solve: 6.52e15 x 22.3. Enter only 3 significant figures. *
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09/04/20

Sulfur bacteria
Hi!I have learned that sulfur bacteria are a type of chemoautotrophic bacteria.So they take hydrogen sulfide and transform it to sulfate? Is that it? Is there any chemical reaction for it?I would... more
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09/04/20

What is 1.5 × 10^7 meters converted into centimeters?
Using the prefix conversion which is 10^-2 for centi, how will the solution be written using dimensional analysis?
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09/04/20

How much heat must be removed to freeze 92 moles of water at its freezing point? The heat of crystallization of water equals -6.02kJ/mol.

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09/04/20

Calculate the amount of heat released when 24.8 g of water cools from 94° to 29°C. The specific heat of water is 4.184 J/g c

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09/03/20

A chemist is mixing a 30% salt solution with a 15% salt solution to make 45 L of a new solution that will contain 25% salt. How much of the 30% solution should the chemist use?
A chemist is mixing a 30% salt solution with a 15% salt solution to make 45 L of a new solution that will contain 25% salt. How much of the 30% solution should the chemist use?
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09/03/20

What is the density of an object having a mass of 88.0 centigrams and a volume of 0.001 KL? Provide standard view value (correct SF) and units.
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09/03/20

Gasoline has a density of 0.710 g/mL. What should be the mass (g) in grams of enough gasoline to fill up the 60.0 Liter tank on my car? Provide standard view value (correct SF) and units.
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09/03/20

If P = 1.5, V = 12, n = 0.46, R = 0.082, solve for T in the equation: PV = nRT. *

A. 101B. 480C. 0.68D. 2.1e-3
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