topic:  Proper Use and Calibration of the pH meter Why is it necessary to rinse the pH electrode with distilled water every after pH readings? explain please

Q: Please label the parts of the two cleavengers below

A: A question based on analytical separations that is to be accomplished.

Q: 13 Balance these net ionic equations. (a) Ag+(aq) + Br¯(aq) → AgBr(s) (b) Cd2+(aq) + S?-(aq) → CdS(s...

A: Balanced chemical equation is that in which number of atoms on left hand side and right hand side of...

Q: 3 Including activity coefficients, find [ Hg2*] in saturated Hg:Brz in 0.001 00 M KBr. Ans: 7.0 x 10...

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Q: 3/5 Calculating pressure-volume work A mixture of helium and hydrogen gas is expanded from a volume ...

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Q: Refer to the chemical equation below. How many molecules of NO2 can be formed using 2 molecules of N...

A: Given - Molecule of NO given = 2 Avagadro number = 6.022 X                           1023 molecules....

Q: Draw dipole arrows for the carbon-metal bonds

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Q: Predict the shift in direction of the net reaction when : dichromate is decreased.   the system is ...

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Q: C3HN MW 121 1000 Ca . liid seie eten sait platen ENERS 2H SH 2H 2H Pn NR se 110 I'RI- OWLL N

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Q: e numbers to order the substances by increasing boiling point. Let #1 be the substance with the LOWE...

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Q: Ammonia (NH,) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,0). W...

A: Mass of oxygen gas = 5.0 g 

Q: A Strong Base A Weak Base - NaOH -NH3 Na+ -Но- OH -NH,+ Write the dissociation reaction for a strong...

A: Given are two types of bases, Strong base and weak base.

Q: Alis: 2. Q.5. 10g of an organic compound Quinine, used to treat malaria, is dissolved in 50 ml of et...

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Q: How many moles of Fe(OH)3 are produced when 85.0L of iron(IlI) sulfate at a concentration of 0.600 m...

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Q: Synthesis. Show how the compound below can be made from benzene and any other reagents of 4 carbons ...

A: Solution -

Q: 3/5 Writing the net equation for a sequence of reactions The extraction of aluminum metal from the a...

A: Question solved below. 

Q: In an experiment, how is the basic character of amines are proven

A: A question based on amines that is to be accomplished.

Q: 5. Draw the following molecules (6 pts) A. (S)-2-chloropentane B. (R)-1-bromo-2-methylbutane C. (3S,...

A: These R and S are the Absolute  configuration of the compound  which tells us that in which directio...

Q: When 120 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter the temperature rose by 3.05 ...

A: Mass of naphthalene burnt = 120mg Temperature rose = 3.05K Calorimeter constant = ? By how much will...

Q: A molecule with the formula AB3 could have different shapes. Which shapes could AB3 form? (Choose al...

A: Molecular geometry is the three-dimensional arrangement of the atoms in a molecule. 

Q: OH NAOH NaOCI, ACOH Он CI но socl, DMP mild base он

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Q: Draw the skeletal structure of the alkyl halide that forms the following alkene as the only product ...

A: Elimination reactions are reaction in which there is removal of hydrogen atom and halogen atom.

Q: 4. Which of the following statement is true A. The change in potential in the equivalence-point regi...

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

Q: topic:  Proper Use and Calibration of the pH meter Calibration is done using buffer solutions every...

A: A buffer solution is the chemical solution which is used for the calibration of the pH meter.  Calib...

Q: What mass of precipitate will be produced from the reaction of 50.0 mL of 2.50 mol/L sodium hydroxid...

A: When sodium hydroxide reacts with zinc chloride it form precipitate of zinc hydroxide.

Q: Unrounded Rounded Calculated Absorbance of År for [HIn] =[In] 0.239966 K, for bromocresol green D.0O...

A: Molar absorption coefficient at 590 nm for In- = 2.85 * 104 M-1cm-1                                 ...

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si,Os),(OH), An a...

A: We can determine Moles of silicon by using unitary method

Q: ^CO2Me Me- Me2CuLi H H Et20 Me., Ме., Me -78 °C, 30 min Me See the Michael Addition Me Me

A: Gilmann reagent is a soft reagent which prefer 1,4 michael addition.

Q: Explain why a 0.10M solution of NaOH is highly basic while a 0.10M solution of CH3OH is essentially ...

A: The  solution of 0.1 M NaOH is highly basic while 0.1 M solution of CH3OH is essential netural even ...

Q: Barium sulfate from a 1.300-g sample was contaminated with 9.4 mg of Fe2(SO4)3 and weighed a total o...

A: Solution                         We know that A) Hence, the apparent % BaSO4 is 24.153%. B) Hence, t...

Q: the new temperature of th

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Q: How to find percentage of chlorine in agcl

A: Percentage of an atom is the ratio of  molecular weight of atom present in the given molecule and Mo...

Q: TRUE OR FALSE 1. All the elements from left to right and bottom to up have the lowest electronegativ...

A: 1. False    Explanation - Electronegativity increases as we move from left to right and bottom to up...

Q: What is the molecular formula and what is the molecule

A: The solution is given below - 

Q: If the structure below is alkyl halide that undergoes elimination, what would be the structure of th...

A: Haloalkanes undergo elimination reaction (dehydrohalogenation) on heating with KOH in presence of C2...

Q: Calculate the degree of unsaturation. Assign the relevant peaks in the IR spectrum. Assign the peaks...

A: The double bond equivalence (DBE) can be calculated by using the formula, DBE = x + 1 - y / 2   wher...

Q: (ii) Calculate the mg/l, Molarity for 200 mg/l as CaCO3 of Na2CO3. molant니

A:        Amount of Na2CO3 = 200 mg/L Equivalents of CaCO3 = Amount of Na2CO3 * 100Mol. weight of Na2CO...

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 748.0 mg sample...

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Q: 13. Imaginary element mccourtium has an average atomic mass of 157.22 u. The atomic masses and % abu...

A: Determine--  a) % abundance of Mc-158  b) Atomic mass of Mc-158   

Q: Write the equilibrium constant expressions for the Iron(III)-thiocyanate system.

A: Equilibrium is the state of the reaction where the rate of forward reaction is equal to the rate of ...

Q: estion: please show the mechanism for the formation of an alkene using the Wittig reaction for this ...

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Q: A certain laboratory procedure requires 0.025 M H2SO4. How many milliliters of 1.10 M H2SO4 should b...

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Q: TEST B. Complete the table below using the following terms. (Solid, Liquid, Gas) Phase Change From T...

A: Deposition- It is a phase change from the gaseous state to a solid, without passing through the liqu...

Q: 3. Assign the absolute configuration to the stereocenters (marked A through G) below. Note: “extract...

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Q: Balance the following redox reaction: S-2 + I2 →SO4-2  + I-1 (Basic)

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Q: TMS n-Bu4N+ F, KF H МеCN Ме., Me.,, 80 °C, 2 h Me Me Me Me

A: In this reaction F- has given . And we knew that floride and silicon bond are very strong bond . So ...

Q: chemical equation

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Q: A scientist measures the standard enthalpy change for the following reaction to be 543.0 k) : 2B1F3(...

A: Given, 2BrF3(g) ➝ Br2(g) + 3F2(g) Standard enthalpy change for the following reaction (∆H°rxn) = 543...

Q: hat should be the best type of fire extinguisher in the following section of the laboratory an port ...

A: As per the guideline, since you have posted a question with multiple sub-parts, we have solved the f...

Q: For reactions in the gas phase, a relationship can be established between Kc and Kp. For which of th...

A: Given,  The following processes that have same numerical value of equilibrium constants are:  

Q: 1) The condensation reaction between a hydroxyl group and a carboxylic group is found to follow the ...

A: