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Q: At 25oC the Ksp for PbCl2 is 1.6 × 10–5 - Calculate Q  for the following: 125.0 mL of 0.0700 M Pb(N...

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Q: What is the Fischer projection of the following molecule? * NH2 CH, CH, NH, NH, CH CH CH,OH CH,OH CH...

A: The solution is given below - 

Q: TABLE 1 CHARACTERISTICS OF COMPOUNDS Solubility Melting Solubility in in H20 Compound Description po...

A: Ionic compounds are those which contains ions as their constituents. These are bound by electrostati...

Q: _______ is use to oxidized ketone to carboxylic acid.       A.) BH₃       B.) LiAlH₄       C.) PCC  ...

A: _____?__ is use to oxidized ketone to carboxylic acid.

Q: Draw out the Lewis Structures for OH2 and BeH2 The molecule BeH2 has no lone pairs of es while OH2 d...

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Q: what is the molarity of the solution made from dissolving 50.9 grams of sodium chloride in water to ...

A: Given  what is the molarity of the solution made from dissolving 50.9 grams of sodium chloride in ...

Q: . The photoelectric effect consists of the emission of electrons from the surface of a metal when th...

A: Solution: We know the energy of photon or tiny particle is given by formula, E = hv. We have another...

Q: Give the appropriate/simplest IUPAC name of the compound (see the attached picture)   A.) 5-tert-b...

A: Give the appropriate/simplest IUPAC name of the compound--

Q: Name the following organic compounds: name compound CH3 CH3 CH, – CH CH, – CH3 CH3 CH,– CH,– CH; C C...

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Q: A hypothetical element has only 3 isotope Isotope 1: 44.98 u Isotope 2: 48.99 u Isotope 3: 53.97 u I...

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Q: Use the References to accers important values if needed for thir question. Complete the following ta...

A: X= 0, Y= 26 X= 1, Y= 20 X= 2, Y= 14 X= 3, Y= 08

Q: 21

A: Option A is correct: As glycogen in liver & muscles

Q: What type of packing is shown below? primitive cubic tertagonal cubic hexagonal closed pack simple c...

A: The packing which is shown in the picture is

Q: Which element does not belong with the other four? 8O 18Ar 17C l7N 53I A) O B) Ar C) Cl D) N E)...

A:  The element  that does not belong with the other four is given below

Q: When the following skeletal equation is balanced under basic conditions, what are the coefficients o...

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Q: Which element’s representative particle is NOT the atom? A) 8O B) 30Zn C) 36Kr D) 51Sb E) they a...

A: In the given options we have only oxygen is is non metal rest of the element are metal metal are ele...

Q: Which of the following is associated with a higher free energy (G)? a)Stable bonds b)Unstable bonds

A: Gibbs free energy is a thermodynamic term that can be used to calculate the maximum reversible work....

Q: What is the molarity of an HCI solution if 25.5 ml of 0.438 M NaOH is required to neutralize 0.0250 ...

A: The given neutralization reaction between HCl and NaOH is : The given data is : The volume of NaOH ...

Q: Place the following orbitals in order in increasing energy in a multielectron atom: Lowest energY I ...

A: Given: The values of n and l for the orbitals- n=3, l=2 n=3, l=1 n=4, l=1 n=5, l=0 n=4, l=0 n=4, l=...

Q: acide z 3 3 5 trimethylhept 4 enoique  what s the structure

A: The name of the organic compound given is 3, 3, 5-trimethylhept-4-enoic acid.  

Q: Which of these carbon is achiral? * CI 2 3 none 3,

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Q: Do Primary and Secondary Alcohols react with:

A:   Functional group identification : 2,4-DNPH test : In this test reagent is 2,4-dinitrophenylhydrazi...

Q: What is the Haworth structure of the given Fischer projection structure ?

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Q: a solution of calcium acetate reacts with a solution of sodium carbonate Finish and balance the fol...

A: Given,  a solution of calcium acetate, (CH3COO)2Ca reacts with a solution of sodium carbonate, Na2CO...

Q: aldehyde CH,- CH = 0 CH2 О3D С — С — Н CH3 NH,–C=0 - CH3 CH, CH; – CH, — CH,— С — Он - -

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Q: Order the following by ionization energy.  1 has the lowest ionization energy, 4 has the highest ion...

A: It is the energy required to to ionise Or remove outermost electronelectron from atom. 

Q: The specific heat of silicon is 700J/kg/°C, how much energy is needed to raise a 14g of silicon by 3...

A: 1) specific heat of silicon = 700 J/kg°C   mass of silicon = 14 g      ∆T = 30°C  2) specific heat o...

Q: Arrange the following elements in order of atomic radius (from smallest to largest): Smallest atomic...

A: Solution: N, F, Ne - second-period elements. N, As, Bi - is 15 group of elements.  We know that On m...

Q: A 8.00 L tank at 28. °C is filled with 12.3 g of boron trifluoride gas and 13.4 g of sulfur hexafluo...

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Q: Draw out Lewis Structures for CO2 and H2O. Using VSEPR Theory make models to represent the two molec...

A: A question based on electronic effect that is to be accomplished.

Q: Which conditions are best for the transformation? но ОН но Link K2Cr207/H2SO4 NABH4 O H20/HCI O LIAI...

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Q: Which change does not increase the voltage of the following electrochemical cell? 2 Ag"(aq) + Cu(s) ...

A:

Q: The Gibbs Free Energy equation is given by the equation: AG = AH - TAS Where: AG = Gibbs Free Energy...

A: Given that, The equation of Gibbs free energy  is  ∆G =∆H - T∆S To solve for temperature T, Step one...

Q: A student is given five metals, labelled A, B, C, D, and E. The student is also given 1.0 mol/L solu...

A: The solution is as follows:  

Q: mass

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Q: Which of the following compounds is NOT an ionic compound? A) CsF B) CH2Br2 C) Fe2O3 D) NH4OH E) all...

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Q: system that is doing work on the surroundings and also gaining heat from surroundings

A: Option 4. Is correct-> q= positive, w= positive We concentrate on the effect that a system (such ...

Q: A solution is 0.0111 M in both Br– and SO42–. A 0.283 M solution of lead(II) nitrate is slowly added...

A: Solution -

Q: Calculate how many moles of CaCl2•2H2O are present in 1.50 g of CaCl2•2H2O and then calculate how ma...

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Q: Find the percent composition of the elements in acetic acid (CH3COOH)

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Q: Magnesium reacts with sulfuric acid in a single displacement reaction. How many milligrams of hydro...

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Q: Radioactive decay can be described by the following equation In A = In Ao – kt where Ao is the origi...

A: We have to predict the final amount of P-32.  

Q: moles

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Q: In the molecule PCI3 The P has type your answer... bonding pairs of electrons and type your answer.....

A: Calculate bond pair and lone pair in PCl3 ?

Q: he net ionic equation f

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Q: An amount of 0.450 mole of an unknown hydrocarbon was subjected to combustion. The process produced ...

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Q: The %purity of a powdered crude sample of Na2CO3 containing only inert impurities is to be determine...

A: #(a): Na2CO3 reacts with HCl to produce H2CO3(aq) and NaCl. H2CO3(aq) decomposes further to form CO2...

Q: A. Identify what types of compound, write on the opposite line (in the box) the name of the compound...

A: In organic chemistry, there are many functional groups like carboxylic acids, alcohols, amines, amid...

Q: Describe then= 4 level in terms of subshells, orbitals and electrons.

A: Describe the n= 4 level in terms of subshell, orbitals and electrons.  

Q: Isópropyl alcohol (C3H8O) is commonly used to make hand sanitizer. How many moles of hydrogen atoms ...

A: Volume of C3H8O = 0.268 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.