08/05/21

What is the structural formula for pentan-1-ol and butanoic acid? As well as the type of reaction and product(s)?
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08/05/21

Draw a diagram showing the arrangement of the valency electrons

Draw a diagram showing the arrangement of the valency electrons in one molecule of the covalent compound carbon dioxide. Use x to represent an electron from a carbon atom. Use o to represent an... more
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08/05/21

Organic Chemistry Questions! Any help would be fantastic, thank you.
please draw the structural formula for each reactant below and the product(s) that form. then state the type of reaction that is occurring: Reactants: hexane and oxygen gas  pentan-1-ol and... more
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08/04/21

Solutions and cognitive properties

What is the molarity of ions in a .342 M solution of Ca(OH)2 assuming the compound dissociates completely?
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08/04/21

For each reactant below, state the product(s) that form, the type of reaction and draw the structural formula?

hexane and oxygen gas pentan-1-ol and butanoic acid propene and hydrogen gas
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08/03/21

What would be the name of this compound and or it’s type/functional group?

CH3 — N —CH3 | CH3
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08/02/21

In this reaction, 5.02 L of oxygen gas were formed at 752 mm Hg and 27.3°C. How many grams of Ag2O decomposed? Ag2O(s) ==> Ag(s) + O2(g) (put answer in sig fig)
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08/02/21

How many liters of oxygen gas are formed when 300 g of KClO3 completely react. Assume that the oxygen gas is collected at P =777mmHg and T =30°C. KClO3(s) ==> KCl(s) + O2(g) (put in sig fig)
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08/01/21

Calculate the pH during the titration of 20.00 ML of 0.1000M with 0.2000M solution after the following edition of acid. The Ka of CH3COOH is 1.8 x10^-5 0ml 5.000ml 10.00ml 15ml
Calculate the pH during the titration of 20.00 ML of 0.1000M CH3COOH with 0.2000M NaOH solution after the following addition of acid. The Ka of CH3COOH is 1.8 x10^-5 :0ml 5.000ml 10.00ml 15.00 ml
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08/01/21

Exercise on Volhard Method
In a Volhard analysis of Cl- an analyst weighed 1.6g sample (ca. 45%m/m Cl-) and made it up to 250.00mL of solution. He pipetted 25.00mL of this solution into a conical flask. Calculate the volume... more
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07/31/21

Help me please with this question.
A cylinder of a gas mixture used for calibration of air analyzers in laboratories contains 10.61% carbon dioxide, 24.89% water vapor, and the remainder xenon at a total pressure of 155.66 atm. What... more
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07/31/21

Help me please with the answer
What is the molecular weight of a gas if 500 mL weighs 10 g at -23 °C and 380 torr?unit:
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07/31/21

Answer for this please
Calculate the specific heat of an unknown metail it is takes 972.5 J to raise the temperature of a 58.2 gram sample from 10.67 to 102.04 degrees Celcius.
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07/31/21

Answer this please
If 19.4 mol of Ar gas occupies 155.6 L, how many mL would occupy 85.3 mol occupy under the same temperature and pressure? Record your answer in scientific notation using 3 significant figures.  
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07/30/21

Find the total number of atoms in a sample of cocaine hydrochloride, C17H22ClNO4, of mass 21.0 mg .
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07/30/21

Calculate the number of mL of 8.0M CuSO4 solution that must be diluted to prepare 12 mL of 2.0M CuSO4 solution.

b.) Calculate the number of mL of 7.5 M CuSO4 solution that must be diluted to prepare 25 mL of 1.35M CuSO4 solution.
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07/30/21

6 mL of 1.0M CuSO4(ag) is mixed with 8 mL of 1.0 M Na2S(ag) to produce 0.250g CuS, a black precipitate. The balanced chemical equation for this reaction is: CuSO4+Na2S —-> CuS + Na2SO4.

a.) What is the limiting reactant in this reaction?b.) Calculate the theoretical (maximum yield) of CuS in grams. c.) What is the percent yield of this reaction?
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07/30/21

How do I find the concentration of A2− for a weak diprodic acid?
A solution contains the weak diprotic acid H2A in water. Given that the concentration of HA− generated from the first ionization of the parent acid, H2A, is 0.00137 M, what is the concentration of... more
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07/29/21

How many mL of 2.50 M calcium hydroxide solution is needed to completely neutralize 0.225 L of 2.50 M phosphoric acid?

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07/29/21

Calculate the rate constant, k, for this reaction. (2 marks)
The rate equation for the reaction, P + Q à 2R + S, is found to be:Rate = k [P]2[Q] where [P] = 0.0120 M and [Q] = 0.0350 M, the rate of reaction was 0.450 ´ 10-4 M/s. Answer the following... more
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07/29/21

Determine overall reaction order
The rate equation for the reaction, P + Q à 2R + S, is found to be:Rate = k [P]2[Q] where [P] = 0.0120 M and [Q] = 0.0350 M, the rate of reaction was 0.450 ´ 10-4 M/s. Answer the following... more
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07/29/21

Balance the following equation, how many grams of propane are needed to react completely with 48 grams of oxygen? How many grams of carbon dioxide will be produced?
Equation C4H10 + O2 —> CO2 + H2O
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07/29/21

If you have 9 x 1022 particles of dicarbon tetrahydride, how many grams do you have?
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07/28/21

What is the molarity of a solution that has 525 grams of sodium chloride (NaCl) in 800 mL of water?
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07/28/21

A student has a can of pop (acid) of unknown concentration. Upon examination it was found that a 10mL sample of the pop could be neutralized by 37mL of 1.3 x 10-6 M solution of base

a) draw and fully label your set up and steps for the above titration b) complete the calculation for the concentration of the acid (pop)c) what is the pH of the acidd) what is the pH of the base
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