What is the mass of (9 * 10 ^ 0) number of water molecules ? Report your answer 3 significant figures and include the unit in your answer. Note: Your answer is assumed to be reduced to the highest power possible.

Q: You have a solution of a weak acid. The solution contains approximately 80% HA and 20% A- at pH 8.…

A: •Here given=>  pH= 8 HA=80%= 0.8= Weak acid A-=20%= 0.2= Salt •Here we have to calculate pKa. •As…

Q: Many hospitals use radioisotopes for diagnosis and treatment or in palliative care. Three…

A: we have to write the isotope symbols for the given isotopes

Q: A group of students are doing an analysis of copper in 1-peso coin. They were tasked to prepare…

A: It is quite impossible to carry out a chemical analysis that is  free of errors or any other…

Q: Determine the molecular formula and structure for the following: an 8-carbon hydrocarbon with three…

A: Hydrocarbons are the compounds that contain carbon and hydrogen atoms.We have given an 8-carbon…

Q: Rank the hydrogen on the following compound in order of increasing acidity. (only mark the numbered…

A: Increasing acidity order of compound can be decided based on their nature.

Q: From the Lewis structures of the species given, pick all of those in which the central atom obeys…

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Q: MASS SPECTRUM entify the following from the low resolution mass spectrum of the unknown compound:…

A: Mass spectrometry is used to identify the mass of an unknown compound.  The peak with highest…

Q: Ligand A binds to protein P with a dissociation constant, Kd = 1.5 uM. (a)  What concentration of A…

A: Given Ligand A binds to protein P with a dissociation constant, Kd = 1.5 uM.  We have to find at…

Q: The following type of compound bond does not separate in water: O a Covalent Bond O blonic Bond OC…

A: There are various types of bonds: covalent bond, ionic bond and hydrogen bond. Ionic bonds are…

Q: Urea is produced when ammonia reacts with Carbon Dioxide. In an industrial process, a mix of ammonia…

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Q: Help on these two plzeas

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Q: Explain which one of these two models describes, explains, or predicts reality?  also which model is…

A: The concept used in this question is from Structure of atom. According to the question Dalton’s…

Q: Calculate the enthalpy change for the reaction. P4O6(a) +202(g) → P4010(*) given the following…

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Q: Liquid X is known to have a higher viscosity and higher vapor pressure than Liquid Y. Use these…

A: A question based on properties of liquid that is to be accomplished.

Q: Under anerobic conditions, when our bodies lack enough oxygen to complete respiration, the product…

A: A solution of lactate and lactic acid forms a buffer solution and the pH of a buffer solution is…

Q: Several conformations of this molecule are shown below. Which of the following Newman projections is…

A: The concept used in this question  is from  stereochemistry chapter of organic  chemistry. Stability…

Q: 7 8 10 11 12 How many millilitres are in 100 liters? Express the answer in scientific notation. How…

A: According to the bartleby guidelines for sub-miltipart, I can solve only first three questions. So…

Q: Determine half-life, order, and k from concentration-time data. The following data were collected…

A: Recall the given reaction,               CH3OCH3 g  →  CH4 g  +  H2 g  +  CO gWe have to find out…

Q: what it means by "rotational resonance" and what does this bond depend on?  and  how exactly this…

A: Molecule: The combination of more than two atom can be recommended as molecule. For example, O2,N2…

Q: will UPVOTE Kindly answer the question. - Why is it important that the chromatography paper not…

A: Chromatography is a process for the separation of a mixture into its components. The mixture is…

Q: In science it is often useful to estimate if a measurement is "in the right ballpark" by comparing…

A: Right ballpark=> Meaning of right ballpark is "be close to the right amount". •Ball park term…

Q: (acidity) Inductive effect (acidity) Atom size (acidity) bonded to the hydrogen (when it was in the…

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Q: N2H4(1) --> NH3(g)+N2(g) Express your answers as inetegers seperated by commas

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Q: H-N-H 1 14 Step 1: Find the Central Atom Central atom is: N Look your line bond structure on P. page…

A: Given compound is NH3 (ammonia). N is central atom while 3 H-atoms are surrounding atoms. no. of…

Q: 5.4 Poly(ethylene glycol), PEG, is soluble in water. A series of tests were done to determine the…

A: Poly(ethylene glycol) (PEG) is a synthetic polymer.  Polymers have very large molecular weight as…

Q: At 525 oC, Keq = 0.387 for the reaction:                                     1/3 NO2(g) + 1/3…

A: The value of the reaction quotient at equilibrium is known as the equilibrium constant for a…

Q: Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox")…

A: we have to determine if the given reactions are redox reactions

Q: There are three main regions of the periodic table. Choose one element from each of these regions…

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Q: Draw the correct product for the given Diels-Alder reaction. + Select Draw III Rings C H O More

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Q: Which of the following mixtures will be buffered when dissolved in a liter of water? 1 mol Calcium…

A: There are two types of buffer solution -1. Acidic buffer : Buffer solution are prepared by the…

Q: Give the precision of each of the followings: 50 mL buret 100 mL graduated cylinder 10 mL Mohr…

A: Since you have asked multiple questions and not specified which one to solve, we will solve first…

Q: 3. Complete the chair conformations on the right by adding isopropyl groups in appropriate…

A: The conversion of planar form to chair form of six membered ring: Cis/trans substituted planar…

Q: The following information is for the substance carbon tetrachloride.  Heat of Fusion= 2.30 kJ/mol…

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Q: Determine the initial volume. 12.0 L of 0.45 m solution from 2.9 m solution.

A: Given,  Final volume, V2 = 12.0 L  Final concentration, S2 = 0.45 m  Initial concentration, S1 = 2.9…

Q: but this is an oxidation reaction, you didn't do the right equation

A: In this question, we have to answer the question by following the preceding question.

Q: The rearrangement of cyclopropane to propene at 500 °C (CH2)3 CH3 CH=CH2 is first order in (CH₂)3…

A: The general form of rate law for the reaction,A+B→C+DRate, r=k[A]x[B]y where,k=rate constantx+y=n;…

Q: A Newman projection of a disubstituted cyclohexane is shown below. Identify the relationship of the…

A: Given Newman projection of substituted cyclohexane:

Q: om the breakdown of glucose is converted into lactate. High lactate levels can lead to acidity in…

A: Given, pKa of lactic acid = 3.86 pH of mixture of lactic acid and  lactate = 3.12

Q: What color does a blue solution absorb and what color does a green solution absorv

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Q: Below are some practice questions. Draw the following within unit cells: 1. 2. 3. (211) (101) [221]…

A: In this question, we are given miller indices for different planes. We have to draw planes…

Q: Water is the solvent of life, yet it only dissociates to a small extent. What is the pKa of water?…

A: Since, water behave as a weak electrolyte, in the pure state, water is dissociated to a very small…

Q: A student properly sets up a column chromatography experiment. Although the mixture is soluble in…

A: Column Chromatography is used to separate a mixture of compounds into its pure components. The basis…

Q: Identify the statement if TRUE or FALSE  Alkanes do not undergo any addition reactions are…

A: Organic compounds are those which contain carbon and hydrogen. Organic compounds are not soluble in…

Q: Using the data in the table, determine the rate constant of the reaction and select the appropriate…

A: According to bartleby Q and A guidelines i am answering the first one only, please repost remaing…

Q: How many moles are there in 17.2 g of FeF 3 : Answer to 2 decimal places and include the unit .

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Q: Write synthesis of Alizarine and Congo Red .

A: Synthesis of Alizarine and Congo Red.Let's write.

Q: Using standard heats of formation, calculate the standard enthalpy change for the following…

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Q: The deflection of a particle beam depends on the charge to mass ratio: (D~q/m). An electron beam,…

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Q: When a sample of solid potassium chlorate is heated strongly, a decomposition reaction occurs. Solid…

A: Mole is calculated by dividing the given mass with molecular mass. When a sample of solid potassium…

Q: Which of the following descriptions of a sigma bond (according to valence bond theory) is NOT…

A: Sigma bond:- It is formed when two adjacent hybrid orbitals do a head-on overlapping. There can be…

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.