A pound of coffee beans yields 49 cups of coffee. How many kg of coffee beans are required to produce 199 cups of coffee

Q: Select which of the following ways gas chromatography can be performed? A. Only in columns B. Only o...

A:

Q: H NMR and IR spectra for a compound with the formula C7H7NO3 are shown in Figu Assign a structure an...

A: Answer -

Q: Write the rate law for the following elemnentary reaction: N,0(g) N2(g) + O(g) Use k, to stand for t...

A:

Q: The freezing point of a liquid will change when a solute is added. Explain how the addition of salt ...

A: Elevation in boiling point and depression in freezing point are colligative properties which depend ...

Q: QUESTION 1 A compound consists of A-atoms and B-atoms, and this compound crystalizes into the follow...

A: Red balls are the symbol for atom A while Blue balls denotes atom B. 

Q: Part A Given the following reaction at 298 K: 2 H2S(g) + SO2(9) → Ss (s) + 2 H2O(g) Calculate A,G un...

A:

Q: What is the half life of the reaction? 4/2 Round your answer to 2 significant digits. Suppose the ra...

A: The graph given is,  

Q: Select to Draw OsO4 (catalytic) NMO OH OH

A: Write reactant of the given product---

Q: An electric immersion heater rated at 100 W is used to heat up 10 kg of water initially at 20 Degre...

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Q: C NasH Hgot

A:

Q: A certain catalyzed reaction is Known to have an activation energy Ea=29.0 kJ/mol. Furthermore, the ...

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Q: The diol shown undergoes reactions with reducing and oxidizing agents to yield two different product...

A: Given : We have to draw the product for the given reactants.

Q: What quantity of heat (in kJ) is absorbed in the process of making 0.957 mol of CF from the followin...

A: Given :- C(s) + 2F2(g)→ CF4(g)  ∆H° = 141.3 kJ/mol  To calculate :-  amount of heat absorbed for the...

Q: When a reaction is performed at a temperature of 314. K, the rate constant is 1.9 x 10-6 s-1. When p...

A: Given,

Q: Li + K2SO4 ---------->  Li2SO4 + 2 K How many grams of potassium are produced if 3 moles of K2SO4 ar...

A: Given : We have to calculate the mass of K produced.

Q: Choose from the following gases which are unsuitable for use as a GC carrier gas? A. Helium B. Oxyge...

A: Gas chromatography (GC) can be defined as the type of chromatography that can be used in analytical ...

Q: different

A: Proteins are polymers of amino acids.Their three dimensional structure depends mainly on the sequenc...

Q: In Gas diffusion experiment, given that: The slope is 0.0023 ks/mm2 Density of acetone 760 kg/m3 MW ...

A:

Q: Select which of the following is not a feature of carrier gas used in gas chromatography? A. It must...

A: Gas Chromatography is a technique used for separating vaporised compounds without their decompositio...

Q: H,C, CH, CH,

A: Alpha protons of a ketone are deprotonated by base.  Color change occurs where there is change in co...

Q: Plastic sulfur is composed of a) S8 molecules c) S2 dimers b) Sx polymers

A: Please find your solution below : Plastic sulphur is also known as amorphous sulphur. It is a form o...

Q: When the D line of sodium light impinges an air-diamond interface at an angle of incidence of 25.0°,...

A: The solution is given below - 

Q: Choose the most accurate descriptions about quantitative analysis using atomic absorption spectropho...

A:

Q: CH3 H2SO4 H2C=C + H3C-OH CH3

A: The  given reaction is of 2-metylprop-1-ene with methanol in presence of H2SO4 . THE Presence of H2S...

Q: Complete the following sentence by typing a number in each of the answer boxes. HO Not considering s...

A: Here, we have to find the number of signals that the given compound would show in 1H NMR and 13C NMR...

Q: 19. Which of the products listed is formed when the B-ketoacid shown below is heated? CH3CH2-C-CH2-C...

A: Beta-ketoacid is a type of carboxylic acid in which there is a ketone functional group at beta(3rd c...

Q: Differentiate between gel filtration and gel permeation chromatography.

A: Chromatography  is a technique  in which the sepration  of components  is done using mobile phase an...

Q: 2. Olympic cyclists fill their tires with helium to make them lighter. The mass of air used in the a...

A: Given that : Mass of air used in the filled tire = 8.56 g Volume of the tire = 855 mL Pressure = 8.5...

Q: 3-nitrobenzoate

A: 1HNMR spectrum of Methyl Benzoate has 4 peaks observed, but in the case of Meta Nitro Methyl Benzoat...

Q: What is the purpose of buffering?

A:

Q: Hess's Law. Identify if the reaction is endothermic or exothermic. Chlorine trifluoride is a colorle...

A: According to Hess's law of thermodynamics,enthalpy single step reaction of formation of chlorine tri...

Q: Solve for the value of the rate constant, k. 00.78M/s=K[0.12] to the second order.

A: Rate constant,k= 54.17 L mol-1 s-1

Q: 3. At 298 K, the EMF of the cell shown below is +0.84 V. Pt(s) Fe"(aq, a = 1), Fe³*(aq, a = 1)|| Ce*...

A:

Q: An aqueous solution of acetone (MM = 58.08 g/mol) has a molality of 4.45 m and a density of 1.25 g/m...

A:

Q: The rate law for the reaction 2NO(g) + Cl2(g) →2NOCl(g)  is given by R = k[NO][Cl2]  If the followin...

A: Chemical kinetics is branch of chemistry in which we deal with the speed at which rate of reaction o...

Q: How much more heat is released from the combustion of one mole of octane (C8H18) than from the combu...

A: Combustion of hydrocarbon produces CO2 and H2O Heat released from the combustion is calculated on th...

Q: 5. Propose a synthesis plan for the following molecules. Mechanisms will not be graded for this sect...

A:

Q: What is an analytical balance?

A:

Q: AAS is the most widely used instrumentation for the analysis of metal and traces metal samples. Stat...

A:

Q: The rate constant for the reaction at 25.0 °C is 6.02 × 10^7 M -1 s -1. At 65,000 ft in the stratosp...

A:

Q: 1. What product would you expect from a nucleophilic substitution reaction of (R)-1-bromo-1- phenyle...

A: The above reaction is a nucleophilic substitution reaction. In this inversion of configuration takes...

Q: Sulfur trioxide decomposes to form sulfur dioxide and oxygen, like this: 2 SO3(g) 2 SO2(9)+O2(g) Wri...

A:

Q: What is the drawing of the product of the reaction? CH3CH2CH=CH2 + Cl2  *=(signifies a double bond...

A: This reaction is related to chlorination of alkene. Chlorination is addition of alkene across double...

Q: In a laboratory set-up, the brick and iron were placed on top of the heaters separately, and when it...

A: Given, The brick and iron are placed separately on the top of a heater and they are heated. Brick is...

Q: 1. Answer the following questions based on the given tables. % Fatty acid by weight Fat or oil Palmi...

A: Since you have asked a question with multiple subparts, we will answer only first 3 subparts for you...

Q: Write the equilibrium constant expression for this reaction: 2 CH,COO (aq)+C,H,O2(aq) → C,H10O4(aq)+...

A: The reaction given is,  

Q: How do you prepare a 100ml of 0.1 M phosphate buffer? From

A: Phosphate buffer is made up using monobasic dihydrogen phosphate and dibasic monohydrogen phosphate.

Q: How many moles of water (H2O) are produced if  100.0 grams of oxygen (O2 )are used?

A: Given :- mass of O2 used = 100.0 g  To calculate :- number of moles of H2O produced

Q: A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pr...

A: Given :-  vapor pressure of solution = 248 torr  vapor pressure of pure hexane = 151 torr  vapor pre...

Q: Ammonia has been studied as an alternative "clean" fuel for internal combustion engines, since its r...

A: Molarity = Number of moles of compound / Volume of solution (L)   

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.