7 How many electrons are necessary to produce a charge of -12.7 C? Express the number of electrons to two significant figures. ► View Available Hint(s) N = Submit Part B 5 ΑΣΦ Previous Answers X Incorrect; Try Again; 4 attempts remaining m = ? What is the mass of this many electrons (in g)? Express your answer in grams to two significant figures. ► View Available Hint(s) ΨΕ ΑΣΦ ? electrons 60 g

Q: 2. Find the difference in pH of vinegar with hydronium ion concentration of 2.5 x 10-10 mol/L and…

A: pH is given by: -log([H+O+])

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A:

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A:

Q: Calculate the mass of NaCH3CO2 contained in 500.0 mL of a 0.150 0 M NaCH3CO2 solution. (NaCH3CO₂ =…

A: Volume=500.0 mLmolarity=0.150Mmass of NaCH3CO2=molar mass of NaCH3CO2=82.0343g/mol

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Q: Calculate the molarity of a 30.0 wt% hydrogen peroxide (H₂O2, FM 34.014 7) solution. The density of…

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A:

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Q: Calculate the fraction of CO32: HCO3 at pH=9.00 Given H₂CO3(aq)H(aq) + HCO3(aq) Assume [H][HCO,]…

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Q: Alkyl Names Formula Name methyl-CH3 ethyl -CH₂CH3 propyl butyl -CH₂CH₂CH3 CHÍCH,CH,CH3 pentyl…

A: Information about the question

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Q: + In the structure below, highlight the bond that can be broken to give a fragment that gives rise…

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Q: 3. For each molecule below, draw two additional resonance reasonable structures. Be show sure to…

A: A question based on introduction to organic chemistry.. For the given 3 structures, the respective…

Q: + Provide the correct IUPAC name for the compound shown here. 6- 5- 3- CH3 4-dichloro pentane di CH3…

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Q: Starting from the wedge-and-dash structure below, rotate the back carbon to provide the Newman…

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Q: CI + 25- (CH3)3 CONa+ (CH3)3COH 100 °C

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Q: 8) Gerardo dissolves 8.213 g of solid Mg(NO3)2 in enough water to make 200.0 mL of solution.…

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Q: Given this structure OH , answer the following: a) The degree of unsaturation is b) The number of SP…

A: Given that, the structure of compound is:

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Q: Calculate the mass of Na₂CO3 (FM 105.988 8) needed to prepare a 15.00 mM solution with a volume of…

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Q: A chemist must dilute 89.2 mL of 407. mM aqueous potassium dichromate (K₂Cr₂O₂) solution until the…

A: As we know,Moles the solute remains same on dilution but volume of the solution increases.Dilution…

Q: If a patient was administered 0.500g of Fluorine-18, what mass of Fluorine-18 remains radioactive…

A: Initial amount of F-18 = N0 = 0.500 g Time = t = 4.0 hr = 360 min Amount of F-18 after 4.0 hr = Nt =…

Q: the following molecules use this symbol to indicate the direction of bond dipole of all polar bonds…

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Q: How many grams of CaCO3 (FM 100.086) are needed to prepare 150.0 mL of an 80.0 ppm aqueous Ca²+…

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A:

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.