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Organic Chemistry

01/27/22

organic chemistry

Hg + H2 → 2H + Hg k1 H + C2H4 → C2H5 k2 C2H5 + H2 → C2H6 + H k3 H + H → H2 k4 Assuming that the intermediates H and C2H5 attain a steady state, determine the rate of... more

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Organic Chemistry

01/24/22

chemistry physical

The rate constant is 7.5 × 10-3 dm3mol–1s. Given that the initial number of moles ofA is 0.05 moles in a volume of 2 litres.Calculate the time (s) taken for [A] to be reduced by 20 %.

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Organic Chemistry

01/23/22

absolute configuration chemistry

what is the configuration (R or S) in 3-phenylbutane?

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Organic Chemistry

01/22/22

a homework question was: when filling up the three p orbitals with electrons, Px has preference. I chose false which was correct, but I wanted clarification. there is no order of x, y, and z for... more

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Organic Chemistry

01/21/22

When 2.35 g of Mg(OH)2 is added to 250.0 mL of water, the temperature of the water raises from 20.5C to 36.0C. Caculate the molar enthalpy of solution.

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Organic Chemistry

01/20/22

chemistry spectrophotometry

The transmittance of a 0.010 M solution of a compound in a 0.100-cmpathlength cell is T 8.23%. Find the absorbance (A) and the molar absorptivity (ε).

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Organic Chemistry Science Chemistry Chem

01/18/22

help me pls w this chemistry question

A gas occupies 24 L at 273 K and 1.0 atm. What is the volume if the conditions change to 388 K and 3.0 atm?

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Organic Chemistry Chemistry

01/16/22

When 3-methylbutan-2-ol undergoes a dehydration reaction, the product will be?

3-methylbutanal 3-methylbut-1-ene 2,3-dimethylbutane 3-methylbutan-2-one 3-methylbutanoic acid

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Organic Chemistry Chemistry

01/15/22

The Ksp of Aluminum Hydroxide is 4.6 x 10-33. What is the molar solubility of Al(OH)3 and what mass could dissolve in 200 ml of water?

need to fine the molar solubility and what mass could dissolve in 200 ml of water

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Organic Chemistry Science Biology Chemistry

01/15/22

What is the process of carbon tracing from leaves?

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Organic Chemistry Chemistry

01/15/22

The correct structure of methyl ethanoate is?

ABCDE

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Organic Chemistry High School Chemistry Equilibrium Chemistry Acids & Bases

01/11/22

A 50.0 mL solution of 0.150 M acetic acid (CH3COOH) is titrated with 0.150 M NaOH. What is the pH after 20.0 mL of base has been added? Ka CH3COOH = 1.8 x 10-5

A 50.0 mL solution of 0.150 M acetic acid (CH3COOH) is titrated with 0.150 M NaOH.What is the pH after 20.0 mL of base has been added? Ka CH3COOH = 1.8 x 10-5

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Organic Chemistry High School Chemistry Equilibrium Chemistry

01/11/22

What is the pH of a 0.350 M solution of lithium citrate? (Ka Citric Acid = 7.4 x 10-4)

I'm struggling to answer this one. Would appreciate a simple explanation if possible.

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Organic Chemistry Science Chemistry Physics

01/06/22

What are Alpha particles, Beta particles, and Gamma particles?

And can someone help me differentiate them? Thanks in advance.

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Organic Chemistry

01/05/22

balanced equation of the reaction of but-1-ene with hydrogen bromide.

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Organic Chemistry Science Biology Chemistry

12/27/21

What is the difference between imitation and emulation ?

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Organic Chemistry

12/26/21

Reaction scheme

can you Devise a reaction scheme to convert propanone into ethyl propanoate.

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Organic Chemistry

12/26/21

Structural isomers

What's the structural formulae for the isomer of C5H10O2 that is A straight-chain molecule that can decolourise bromine water, but cannot exist as geometric (cis-trans) isomers. It can react with... more

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Organic Chemistry

12/26/21

What's a chemical test to distinguish between each of the following pairs:

propanoyl chloride and propanamide. propanal and propan-2-ol. methyl ethanoate and propene

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Organic Chemistry Chemistry Biochemistry Chem

12/20/21

Calculate the concentration of sodium formate and formic acid when the buffer is at pH = 3.9.

You are preparing 1L of a 250mm formic acid buffer. The pka of formic acid is 3.75. Calculate the concentration of sodium formate and formic acid (each in mM) when the buffer is at pH = 3.9. At pH... more

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Organic Chemistry Science Chemistry Biochemistry

12/16/21

What is the role or part of zinc sulphate and purified water in a zinc sulphate ophthalmic solution?

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Organic Chemistry Chemistry

12/15/21

How many bonds does each carbon, oxygen, and hydrogen atom form in maltose?

I know carbon has 4 bonds, oxygen has 2 bonds and hydrogen has 1 bond, but that's why I'm confused. The chemical formula for maltose is C12H22O11, so if carbon has 4 bonds and there are 12 carbon... more

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Organic Chemistry Science Chemistry Biochemistry

12/15/21

What is the relationship of an isotonic solution to an eye drop and dextrose saline solution?

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Organic Chemistry Chemistry Chem

12/14/21

Do the molecular orbitals that are occupied by electrons have MORE or LESS nodes than the unoccupied orbitals, and are they at a HIGHER or LOWER energy level?

A) A molecule with eight carbons and alternating single and double bonds (C=C-C=C-C=C-C=C) has eight delocalized electrons in large molecular orbitals that span the length of the molecule. Eight... more

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Organic Chemistry Chemistry Rates Of Reaction

12/14/21

RATES OF REACTION

Consider the overall reaction involving three elements as reactants and compound as the product: X+2Y+2Z ---> XY2Z2. When a series of reactions is performed with different initial... more

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organic chemistry

chemistry physical

absolute configuration chemistry

filling up p orbitals

When 2.35 g of Mg(OH)2 is added to 250.0 mL of water, the temperature of the water raises from 20.5C to 36.0C. Caculate the molar enthalpy of solution.

chemistry spectrophotometry

help me pls w this chemistry question

When 3-methylbutan-2-ol undergoes a dehydration reaction, the product will be?

The Ksp of Aluminum Hydroxide is 4.6 x 10-33. What is the molar solubility of Al(OH)3 and what mass could dissolve in 200 ml of water?

What is the process of carbon tracing from leaves?

The correct structure of methyl ethanoate is?

A 50.0 mL solution of 0.150 M acetic acid (CH3COOH) is titrated with 0.150 M NaOH. What is the pH after 20.0 mL of base has been added? Ka CH3COOH = 1.8 x 10-5

What is the pH of a 0.350 M solution of lithium citrate? (Ka Citric Acid = 7.4 x 10-4)

What are Alpha particles, Beta particles, and Gamma particles?

balanced equation of the reaction of but-1-ene with hydrogen bromide.

What is the difference between imitation and emulation ?

Reaction scheme

Structural isomers

What's a chemical test to distinguish between each of the following pairs:

Calculate the concentration of sodium formate and formic acid when the buffer is at pH = 3.9.

What is the role or part of zinc sulphate and purified water in a zinc sulphate ophthalmic solution?

How many bonds does each carbon, oxygen, and hydrogen atom form in maltose?

What is the relationship of an isotonic solution to an eye drop and dextrose saline solution?

Do the molecular orbitals that are occupied by electrons have MORE or LESS nodes than the unoccupied orbitals, and are they at a HIGHER or LOWER energy level?

RATES OF REACTION

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