zinc and copper are used in the measurement of food. Are there other topics possible

Q: In an experiment to determine the amount of aspirin in a tablet, one of the bottles of NaOH used was...

A: Here we required to predict the effect of concentration NaOH in determination of the concentration o...

Q: What is the coefficient, b, in the reaction below, if Kc = 2.94e-5 and Kp = 9.54e-9 at 402.98°C?   ...

A:

Q: 5. A scientist has a mixture of two peptides, A and B, and wants to separate them using ion exchange...

A: (a)   The resin is positively charged, i.e., anion-exchange resin.   So, we need a buffer where both...

Q: 50.00- 45.00 40.00- 36.00 30.00- 3 25.00 20.00 15.00 10.00 5.00 0.00 o.b0 2.00 600 .00 10.00 12.00 1...

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Q: The pKa of acetic acid, HC2H3O2 is 4.58. A buffer solution was made using an unspecified amount of a...

A:

Q: Consider the reaction below. Which of the following would increase the partial pressure of Bat equil...

A: Le Chatelier's principle states that when any of the factors like pressure, concentration, temperatu...

Q: If you wanted to create a buffer with a pH - 3.2, what substances would you choose to make the buffe...

A:

Q: Which of the following is/are true?    Methionine is an essential amino acid   Valine contains two c...

A: Amino acids and proteins are the building blocks of human life. Amino acid contain one COOH group an...

Q: Experiment 1: Preparation and pH of Buffer Solutions Test Data:     Mass of Sodium Acetate :4.0 g ...

A: Given, mass of sodium acetate = 4.0 g Volume of Sodium Acetate Solution= 100.00mL Acetic Acid Concen...

Q: (a) Select all of the correct statements about the relative acid strengths of pairs of acids from th...

A:   1. H2S is more acidic than H2O. Reason: H-S bond is more polar than H-O.  2. HClO2 is stronger aci...

Q: Acetic acid: ka = 1.75x105 Ammonia: ko = 1.8x105. Hydrofluoric acid: 7.2 x104 Hydrogen sulfide: kal ...

A: Since you have asked multiple questions we will answer the first one for you. To get the remaining q...

Q: a. If the mixture is dabbed onto chromatography paper that was then placed into a polar solvent, ran...

A: Greater the electronegativity difference between the atoms, greater is the polarity.

Q: Use the data at 25°C given below to calculate the value of AG°rxn for the reaction shown when it tak...

A: The change in Gibb's free energy is calculated by the change in enthalpy of the reaction and the cha...

Q: Arrange the following chemical structures from MOSI to LEAST acidic and explain the reason behind th...

A: Higher the oxidation state of central atom, more is the acidic nature and also so simply more the no...

Q: Question 22 Consider the following reaction: NH2 NH2 Br2 HBr Br If 0.35g of aniline reacts with O.45...

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Q: Enter your answer in the provided box. Carbonyl chloride (COCI,), also called phosgene, was used in ...

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Q: ind an expression for the diffusion coefficient in parallel and perpendicular to he basal plane for ...

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Q: А. Alkenes CH3 CH3 CH3 1. CH3-CH=CH-ĊH-CH2CH2-CH3 EC-CH-CH3 ČH3 3. СH-C: CH3 ÇH3 2. H-с— с—сн-ҫн-сH-...

A: Given alkenes are => 

Q: Select all that apply. Select the equilibrium constant expressions (K, and Kp) for the formation of ...

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Q: 9. Explain why ionic compounds are brittle.

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Q: 12) If gloves are not worn when handling the cuvette in a spectrophotometry xperiment, how would thi...

A: To explain the effect of not wearing the gloves in a spectrophotometry experiment on 1) Absorbance r...

Q: A 0.60 M solution of a weak acid, HA, has a pH of 3.41. What is the percentage ionization of the aci...

A: ★ Answer : percentage of ionization of the acid is 0.064% 

Q: Determine the weight of the sample needed to be mixed to create a 125ml of the following compounds. ...

A: Given:: molarity of NaOH = 6 M  volume of NaOH = 125 ml = 0.125 L  molar mass of NaOH = 40 g mol-1 w...

Q: Consider the reaction: C(s) + H2O + heat (double arrrow) CO(g) + H2, what will happen when decrease ...

A: Given,  the reaction:  C(s) + H2O ⇔CO(g) + H2  When temperature decreases the reaction will shift to...

Q: In the titration of 25.0 mL of 0.1 M CH3COOH with 0.1 M NaOH, how is the pH calculated before the ti...

A: Given: Concentration of CH3COOH = 0.10 M Volume of CH3COOH solution = 25.0 mL.  

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the...

A:

Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) If the ...

A: We have to used equation of first order rate constant. As we know nuclear reaction follows first ord...

Q: 2. Deduce the fırst four virial coefficients of (i) an ideal gas,

A: The values of first four virial coefficients is needed to be derived for an ideal gas.  We know that...

Q: Peak area proportional to mass or concentration of the individual components of the sample injected....

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Q: Bb Microso x I Bb Emailin x Bb CHEM 2 X Bb CHEM 2 X с C Expert X b My Que x + Content x Take Te X Wi...

A:

Q: Be sure to answer all parts. The equilibrium constant K, for the reaction below is 0.00984 at a cert...

A:

Q: Consider the following reaction at equilibrium CO(g) + H20(g)=CO2(g) + H2(g) If CO(g) is removed, in...

A: Given- CO(g)+H2O(g)<->CO2(g)+H2(g)

Q: Which of the following sets of quantum numbers is not possible? n m m, A. 4 3 -2 В. 3 С.3 +1/2 -1/2 ...

A:

Q: The value of AH° for the reaction below is -126 kJ. The amount of heat that is released by the react...

A: Given reaction is : 2Na2O2 (s) + 2H2O (l) → 4NaOH (s) + O2 (g) Standard change in enthalpy of the re...

Q: Consider the following reaction at equilibrium: N2O4(g) = 2NO2(g) The AH° for this reaction is > 0. ...

A: The equilibrium reaction given is, => Given: ΔHo > 0 And the temperature is increased by 20.0...

Q: Question 2 The detector is the part that computes the area of the peaks of the gas. O True O False

A: The area of a peak is proportional to amount of the compound that is prese detector  is a device use...

Q: What is the pH of a 1.00 x 10^-9 molar solution of CaCl2?

A: Given :  Concentration of CaCl2 = 1.00 x 10-9 M   

Q: 4. Determine the Factor of the flowing compounds. a. Muriatic acid b. Plaster of paris C. Potash

A: Answer: Depending upon the nature, value of valency factor for different substances is different sub...

Q: consider the reaction: H2(g) + NO(g) arrow forward N2O(g) + H2O(g). What is the total order of react...

A: H2(g) + NO(g) → N2O(g) + H2O(g) the balanced equation is: H2(g) + 2NO(g) → N2O(g) + H2O(g)

Q: AIBT3

A: ->First of all alkyl bromide form carbocation hence if possible then rearrangement occur and most...

Q: 50.00 45.00 40.00 3.00 30.00 25.00 20.00 15.00 10.00 5.00 0.00 o.bo 2.00 4.00 10.00 1200 14.00 Mtes ...

A:

Q: Question 5 Why is acid precipitation a problem for aquatic ecosystems? A. It adds heavy metals to bo...

A: pH is measure of acidity or basicity of a solution. pH less than 7 means solution is acidic and pH g...

Q: The rate constant for this zero-order reaction is 0.0350 M ·s=1 at 300 °C. A → products How long (in...

A:

Q: Temperature of hydrobromic acid (*C) 24.0 Volume of potassium hydroxide (mL) 100 mperature of potass...

A: As per battle by guidelines, as an expert I am allowed to solve first three sub parts. Please re upl...

Q: You wish to measure the iron content of the well water on the new property you are about to buy. You...

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Q: What is the percent composition of scopolamine, C17H21NO4? __C% __H% __N% __O%

A: Molar mass of C17H21NO4 = molar mass of (17C + 21H + 1N + 4O)  = [17(12)+21(1)+1(14)+4(16)] = [204 +...

Q: 1. Do the following: a) name the type of cell (electrolytic or galvanic), b) indicate the direction ...

A:

Q: 5. Explain why metals exhibit the following properties. – page 269 shiny flexible Electrical conduct...

A: Metals are shiny-The positive metal ions are surrounded by pool of electrons. The electrostatic forc...

Q: Calculate the pH of a 0.25 M ammonium chloride solution with a Kb value of 1.8 x 10-5. NH4+ (aq)  +...

A:

Q: N204(g) = 2NO2(g) The AH° for this reaction is > 0. If the temperature is increased by 20.0 k while ...

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.