09/29/22

conformational analysis of 1-bromopropane
Draw the potential energy curve for rotation about the C1 - C2 bond in 1-bromopropane. Draw Newman projections and label them as staggered or eclipsed. You do not need any numerical values, just... more
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08/14/22

use the rational roots theorem
Use the rational roots theorem to find all the roots of the polynomial 2x^4 -17x^3 +46x^2 -43x +12 =0.
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08/09/22

Given initial rates data, what is the rate law? What is the rate constant?
Trial 1: [A] = 0.3 M, [B] = 0.3 M, [C] = 0.3 M, rate = 9.0 x 10^-5 M/sTrial 2: [A] = 0.3 M, [B] = 0.3 M, [C] = 0.9 M, rate = 2.7 x 10^-4 M/sTrial 3: [A] = 0.6 M, [B] = 0.3 M, [C] = 0.3 M, rate =... more
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07/18/22

chemistry equilibrium

Morphine, C17H19NO3, is a naturally occurring base that is used to control pain. A 4.5 x 10 -3 mol/L solution has a pH of 9.93. Calculate Kb for morphine.
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07/16/22

A flask contains 0.582g of water at 25°C .The vapor pressure of the water at this temp is 23.8 torr. What is the minimum volume of the flask so that there is no liquid water in the flask.
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07/13/22

Alvin is 8 years younger than Elga. The sum of their ages is 42. What is Elgar’s age?
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07/13/22

Consider the reaction of SiF4 with H2O to form HF and SiO2. If 4.13 g SiF4 is reacted with excess H2O and 2.14 g of HF is ultimately isolated, what is the percent yield for the reaction?
Consider the reaction of SiF4 with H2O to form HF and SiO2. If 4.13 g SiF4 is reacted with excess H2O and 2.14 g of HF is ultimately isolated, what is the percent yield for the reaction?Percent... more
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07/11/22

Chemistry 102: Acids: find pH of solution
14.Ascorbic acid (vitamin C, C6H8O6) is a diprotic acid (Ka1 = 8.0×10–5 and Ka2 = 1.6×10–12). What is the pH of a 0.220 M  solution of ascorbic acid?
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07/05/22

Help me solve this!!
The following are experiments performed at 28.36°C:Exp’t # [feldomite]initial [anicium]initial [dolomide]initial Rate initial (M/second)1 0.963 ... more
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07/04/22

Help me solve this
You are studying an unknown substance that appears to be some type of sugar. You prepare a solution by dissolving 24.48g of the sugar in 160.0mL of water and find that the freezing point of the... more
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06/28/22

graphing an ellipse with an equation that isn't in standard form
Identify the vertices, co-vertices, foci, domain, and range for the following ellipse:4x^2 + y^2 + 24x +2y = -33
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06/15/22

identifying a metal using electrolysis
When a solution containing M(NO3)2 of an unknown metal M is electrolyzed, it takes 74.1 seconds for a current of 2.00 A to plate out 0.0737 g of the metal. What is the metal?
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06/14/22

Ibuprofen contains carbon, hydrogen, oxygen (C3H3O2), combustion anaylsis of a sample of ibruprofen revealed the following mass composition, determine the molecular formula of ibuprofen
The molar mass of ibuprofen is 206.2722 g/molmass composition: H 8.795%, O = 15.513%, C= 75.691%
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06/13/22

VII. Finding Similarities and Differences: SO3 and CH2O
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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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12/13/21

AP chem equations and reactions summary
Butane, C4H10, is a hydrocarbon that burns according to the unbalanced chemical reaction below. Balance the equation.__C4H10 (g) + ___O2 (g) --> ___CO2 (g) + ___H2O (g)a. At STP, if 4.50 L of... more
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09/05/21

Elements found to the right of the metalloids on the periodic table display which properties?
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08/23/21

Chemistry question on equilibrium
Consider the following equilibrium for which H = +23.12 kJ/mol: NiBr2(s) + H2(g) ⇌ Ni(s) + 2HBr(g) When 2.00 moles of NiBr2(s) and H2(g) were each placed into an evacuated 10.0 dm3 container at... more
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08/20/21

Need help asap.
1. Find the error in the work shown below. Explain the error completely and what should have been done instead. Finally, enter the correct simplification process.2. Divide the expression shown,... more
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08/18/21

In triangle ABC, the measure of angle C is four times the measure of angle A, and the measure of angle B is 18° more than the measure of angle C. Find the measure of each angle of the triangle.
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08/17/21

Functional group of elements
What is the functional group present in the following: Paraffinum Liquidium Glyceryl stearate CI 19140 Cocoa Butter
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08/11/21

Chemistry questions on Volhard Method
A 0.8050 g of arsenic containing pesticide sample was treated with 25.00 ml of 0.0950 mol/L silver nitrat which resulted in the precipitation of Ag3AsO4. The excess silver ions were titrated with... more
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08/10/21

Chemistry question on Volhard method
The Volhard method was used for the following analysis:A 2.0412 g sample that contains only sodium chloride and barium iodide was dissolved and diluted to a volume of 250.00 mL volumetric flask. A... more
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07/07/21

What is true about the reaction?
Identify which of the following is correct about the below given reaction.2 Cl 2(g) + Si(s) → SiCl4(l)This reaction has Identify which of the following is correct about the below given reaction.2... more
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07/04/21

Question in Chemistry
Sodium metal reacts with water to produce hydrogen gas according to the following equation:2Na(s) + 2H2O(l)2NaOH(aq) + H2(g)The product gas, H2, is collected over water at a temperature of 25 °C... more
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