1. A wooden square block is placed on an analytical balance giving a mass of 5.1977 g. The square block has dimensions of 2.00 cm long, 2.00 cm wide, and has a height of 2.00 cm. Calculate the density of the wooden square block in units of g/cm3 to the correct number of significant figures.

Q: For a 0.0491 M aqueous solution of cyanic acid, HCNO (K, = 3.5*104), determine the following. What a...

A: Weak acids are the weak electrolytes that dissociate in aqueous medium to form hydronium ions. The d...

Q: wo volatile substances, A and B are dissolved in one another and the resulting solution has a vapor ...

A: Given : Mole fraction of B = 0.230  Mole fraction of A = 1-B = 1-0.230 = 0.77  

Q: Calculate the pH of a 0.400M solution of quinoline, C₉H₇N.

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Q: You have a solution which is 45.6% by mass isopropyl alcohol (MM = 60.11 g/mol) in water. The densit...

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Q: Propose a metal for determining the specific heat for a metal like sodium which reacts violently wit...

A: Method for determining the specific heat for a metal like sodium which reacts violently with water: ...

Q: Keeping in mind periodic trends, which is the strongest acid? O HCI О Her HI O HF

A: The correct option is:  

Q: Q7. Kinetics were analysed for an enzyme in the absence and presence of inhibitor. In the absence of...

A: A multiple choice question based on kinetics of reactions that is to be accomplished.

Q: Calculate the column height needed in meters to generate a pressure of 100 kPa using: (a) water; (b)...

A: Pressure is a parameter that can be described as a force applied on a unit area. Therefore, it is ex...

Q: It takes 50.0 ml of 0.0500 M Na2S2O3 solution to completely react with the iodine present in a 125.0...

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Q: Consider the zeroth order decomposition of A with an initial concentration o 6.0 M. If k= 0.0170 s-1...

A: For zero order reaction..  Intercept form of zero order reaction, Ct= C0 - kt.. Where, Ct is concent...

Q: 4. The density of a proton is approximately 4.0 x 1014 g/cm°. If the mass of the proton is 1.7 x 102...

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Q: What are the functional groups found in Sodium palmate?

A: Given : We have to tell what functional groups are present in Sodium palmate

Q: The electronegativity of elements on the periodic table increases going a column and to the in each ...

A: Electronegativity is the attracting power of an atom towards itself. Now as we move from the left to...

Q: Problem 68 2266 IR Spectrum (liquid film) 1749 4000 3000 2000 1600 1200 800 v (cm") 100 68 Mass Spec...

A: All the spectroscopy helps us to predict the structure of the unknown organic compound.  Mass spectr...

Q: 1. 5 moles of an ideal gas expands from 3L to 8L at a constant temperature of 300K. (a) What is the ...

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first question , ...

Q: Consider a first order decomposition reaction of A with t1/2 = 35.0 seconds. If the initial concentr...

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Q: the pH of

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Q: You will conduct the following three reactions in this experiment. Reaction 1: An aqueous solution o...

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Q: Consider the molecule: \1 |2 13 14 C=C-C- C-H H. 1-butene Specify the hybridization of each carbon a...

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Q: What is the practical application on your knowledge about Chiral Molecules?

A: Chiral molecules are those in which carbon is attached to four different groups.

Q: 1. BF3 2. PCl5 3. H2O

A: Answer - Lewis structure - Lewis structures, also known as Lewis dot formulas, Lewis dot structures,...

Q: Which liquid would have the weakest surface tension? a. X b. Y c. Z d. The surface tensionof X,Y, Z ...

A: The data given is,  

Q: Why would 1-iodo-2-nitrobenzene be difficult to synthesize using EAS? (EAS= aromatic electrophilic s...

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Q: Identify, synthesized and show the mechanism show in the spectroscopy

A: A question based on IR spectroscopy that is to be accomplished.

Q: milliliters

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Q: satellite falls from the sky and scientists find a strange gas that has a density of 12.45 g/L. They...

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Q: Why do we need to know the concept of chiral molecules

A: Chiral molecules are those in which carbon is attached to four different groups.

Q: hy is bromination more selective than chlorination?

A:  bromination more selective than chlorination because 

Q: CH 4(g) +2O 2(g) CO 2(g) +2H 2 O (l) If 185.4 grams of C*H_{4} react with excess O_{2} how many gram...

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Q: the rate constant for the first-order decomposition of N2O is 2.97 s^-1. what s the half-life of the...

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Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction i...

A: Given: Mass of CO2 reacting = 7.8 g.  

Q: State Boyle’s and Charles’ Law

A: Boyle’s and Charles’ Law are the laws for gases.

Q: QUESTION 2 Based on the following synthetic route, cycloalkene J could be used to generate a cyclise...

A: Compound J undergoes Ozonolysis organic reaction where the unsaturated bonds of alkenes are cleaved ...

Q: Arrange the following e DECREASING atomic radius, rubidium, bromine, chlorine. A. Ca, CI, Br, Rb B. ...

A: The elements given are Ca, Cl, Br and Rb.  

Q: According to the Evan's pKa table, phenol has a pKa of 9.95. p-Nitro and m-nitrophenol have pKas of ...

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Q: 25 50 100 125 150 175 200 180 160 140 m/z ppm Cos-13-360 Relative htensity

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Q: . Which graph correctly displays the relationship between wavelength, in meters, and frequency, in h...

A: To explain: The graphical relationship between the wavelength in m and frequency in the hertz of the...

Q: Molarity of Na2S2O3 (stock solution).    0.100 M Volume of diluted bleach titrated (taken from the ...

A: Solution: For a given titration reaction the stoichiometric relation plays important role, as from i...

Q: Convert each of the following OH concentrations to pH. 1.4 M i eTextbook and Media 2.4 µM i 0.031 M ...

A: It can be calculated by using formula :-  pH = 14 + log[OH-] 

Q: Indicate whether the salts below would form solutions that are acidic, basic, or neutral in pH. KCIO...

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Q: a) Propose a synthesis route to prepare the following product from the given starting material. Note...

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Q: Determine the concentrations of the following ionic species present in a 0.271M solution of Na2SO3. ...

A: ANSWER : (i) Concentration of OH- ion  =  0.000207 M (ii) Concentration of HSO3- ion  =  0.000207 M ...

Q: Mass of NaOCl in commercial bleach titrated. ?

A: Moles help to calculate mass

Q: Question 4 of 4 Use the table below to determine the AG,an for the following reaction at 39°C. N2(8)...

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Q: Indicate whether the salts below would form solutions that are acidic, basic, or neutra in pH. Cu(NO...

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Q: half-life f

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Q: T (K) k (s) 625 1.1 x 10 4 635 1.5 x 104 645 2.0 x 104 x 10-3 (Enter your answer in scientific

A: Given : We have to calculate value of K at 735K 

Q: lews SEC # Evaluation of Commercial Bleaching Solutions 22 DATA SHEET Brand name of commercial bleac...

A: Concentration of NaOCl = M1 = 0.175M VOlume of NaOCl = V1  Concentration of KI = M2 = 0.225M Volume ...

Q: ACTIVITY/EXERCISES Direction: Graph the heating curve of ethanol using the information given. Check ...

A: A question based on intermolecular force that is to be accomplished.

Q: A side reaction in the manufacture of rayon from wood pulp is 3CS2 + 6NAOH → 2N22CS3 + Na2CO3 + 3H2O...

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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.