06/10/21

2 C2H6 + 7O2 = 4 CO2 + 6 H2O If 0.31 moles of H 2 O were produced, how many moles of carbon dioxide would also have been produced?
Grateful for any help given!
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06/09/21

2 NABr + Ca(OH)2 = CaBr2 + 2 NaOH How many moles of CaB 2 are produced, if 14.72 moles of NaBr and excess Ca(OH) 2 react?
Grateful for any help given!
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06/02/21

college algebra help
Shaun invests $5800 in two different accounts. The first account paid 7 %, the second account paid 9 % in interest. At the end of the first year he had earned $490 in interest. How much was in each... more
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05/31/21

Please help with statistics!
A population of values has a normal distribution with μ=82.6 and σ=56.2. You intend to draw a random sample of size n=223.Find P9, which is the score separating the bottom 9% scores from the top... more
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05/21/21

If 7.6 moles of magnesium react with excess oxygen, how many moles of magnesium oxide can be produced?
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05/18/21

Chemistry Question 15
Using the Ideal Gas Law and the given measurements, solve for the unknown variable.How many moles of Rn are in a 63.353 L container at 5.8102 atm and 527 K? Remember:PV = nRTR= 0.0821 atm•L/mol•K
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05/17/21

Chemistry Question 13
Using the Ideal Gas Law and the given measurements, solve for the unknown variable.How many moles of Rn are in a 63.353 L container at 5.8102 atm and 527 K?
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05/17/21

Chemistry Question 12
Using the Ideal Gas Law and the given measurements, solve for the unknown variable.V: 55.213 Ln: 4.5344 molT: 214.27 KP: ?
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05/17/21

Chemistry Question 10
Using the Ideal Gas Law and the given measurements, solve for the unknown variable. P: 9.6873 atmn: 9.2891 molT: 351.17 KL= ?
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05/17/21

Chemistry Question 09
Using the Ideal Gas Law and the given measurements, solve for the unknown variable. P: 7.0617 atmn: 5.7423 molT: 491.37 KV: ?
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05/17/21

Chemistry Question 08
Using the Ideal Gas Law and the given measurements, solve for the unknown variable. A 2.023 mol sample of CO is in a 75.668 L container. What is the pressure of this gas in atmospheres at 304.18 K?
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05/17/21

who did planters employ to market and sell their crops?
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05/11/21

STOICHIOMETRY - what is the PERCENTAGE YIELD OF ASPIRIN?

Density of Acetic Acid = 1.082 g/mlMass of Salicylic Acid = 5.102 gVolume of Acetic anhydride = 10.00 mlMass of filter paper = 0.0654 gMass of watch glass = 8.677 gMass of filter paper, watchglass... more
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05/11/21

What is the percentage yield of aspirin? (STOICHIOMETRY)
Density of Acetic Acid = 1.082 g/mlMass of Salicylic Acid = 5.102 gVolume of Acetic anhydride = 10.00 mlMass of filter paper = 0.0654 g Mass of watch glass = 8.677 gMass of filter paper,... more
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05/09/21

C4H10+O2=CO2+H2O
If the reaction produces 90 grams of water, how much butane was used?ive found the answer using calculators, but I cannot find an explanation. I really need to know how the answer was derived.... more
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05/09/21

C4H10+O2=CO2+H2O
If the reaction produces 90 grams of water, how much butane was used?ive found the answer using calculators, but I cannot find an explanation. I really need to know how the answer was derived.... more
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05/06/21

Practice Question #6 – Gram to Gram Mole Ratio Stoichiometry
1.     Copper I iodide, CuI, is not stable enough to last long in storage, so it is generally made just prior to use. In can be prepared from copper sulphate and hydriodic acid by the... more
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05/06/21

Practice Question #6 – Gram to Gram Mole Ratio Stoichiometry
1.     Copper I iodide, CuI, is not stable enough to last long in storage, so it is generally made just prior to use. In can be prepared from copper sulphate and hydriodic acid by the... more
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05/06/21

Practice #6 Gram to gram Ratio Stoichiometry
Copper I iodide , Cul , is not stable enough to last long in storage , so it is generally made just prior to use . In can be prepared from copper sulphate and hydriodic acid by the following... more
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05/05/21

Chemistry Mole Calculations
What is the volume in liters (at STP) of 6.02 x 10 (24.... avogadros number sorry cant make the 24 a tiny exponent) atoms of helium gas?
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05/02/21

Math College Algebra
The population of a southern city follows the exponential law. If the population doubled in size over 26 months and the current population is 20,000, what will the population be 4 years from now?
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04/26/21

The chemical formula of yellowcake is U3O8. How many uranium atoms are present in 74.3 mg of yellowcake? (Avogadro's number is N0 = 6.022e+23)
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04/25/21

A balloon is filled with 1.00 mole of hydrogen gas. Using the ideal gas law, calculate the volume (𝑉) of the balloon at standard temperature and pressure (STP).
I need help please, like i get confused when setting the Ideal Gas Law.
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04/20/21

How many copper atoms are in your 25.0 mL of copper (ii) sulfate solution?
You need to use Avogadro's number in this question!
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04/19/21

How many copper atoms are in your 25.0 mL of copper (ii) sulfate solution?

You need to use Avogadro's number in this question!
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