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Chemistry Questions
2. (1.5pt) Calculate [ClO-] in a 6.00% bleach solution. A 6.00% bleach solution contains 6.00g of...
which of these substances cannot behave as a lewis base in an aq solution a- Co...
The mercury in a fish sample is determined to be 1.80, 1.58 and 1.64 ppm. Calculate...
How many moles of sulphur hexaflouride are present in 3.64 x 10^21 molecules of this compound?
Calculate the pH of the resulting solution if 15.0 mL of 0.150 M HCl(aq) is added...
The value of the equilibrium constant for the reaction 2HBr(g)<....>H2(g)+Br2(g) is Kc=1.26*10^-12 at 500k. A. what...
When the following skeletal equation is balanced under basic conditions, what are the coefficients of the...
A buffer solution is made by adding 1.00M weak acid (pKa=4.45) to 1.25M solution of its...
Determine the hardness of this water in units of mg/L as CaCO3. Hardness is the sum...
A volume of 36.2 mL of a 0.268 M Ca(NO3)2 solution is mixed with 90.5 mL...
(a) How many milliliters of 0.155 M HCl are needed to neutralize completely 35.0 mL of...
How does the standard addition method of calibration help with interferences? Do the interferences completely go...
How many mL of 0.115 M sodium hydroxide would it take to neutralize 5.00ml of 0.550...
4He is formed when isotopes of hydrogen undergo fusion. What is the energy associated with the...
What is the relationship, if any, between the pH (9.27) at the half equivalence point and...
A) A solution contains 1.49×10-2 M potassium phosphate and 6.81×10-3 M potassium bromide. Solid silver acetate...
What mass of precipitate do you expect when mixing 125 mL of a solution containing 4.88...
Consider an electron in a one-dimensional box of length 0.16 nm. (a) Calculate the energy difference...
1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50...
Part A. A certain first-order reaction (A→products) has a rate constant of 3.90×10−3 s−1 at 45...
write a balanced equation showing the neutralization reaction between NH4OH+H2SO4. Name the reactant that is an...
A) Is there a point where an increasing spring constant no longer affects the bounce height?...
The boiling point of water, H2O, is 100.000 °C at 1 atmosphere. Kb(water) = 0.512 °C/m...
ANSWER THE FOLLOWING AS TRUE OR FALSE a) _____ there are no saturated fats in...
A solution of iron (II) sulfate was prepared by dissolving 10.00g of FeSO4-7H20 (FW= 277.9) in...
The heat of vaporization of benzene (C6H6) is 30.77 kJ/mol at it's boiling point (80 C)....
What is the molar volume that an ideal gas would occupy at 20.0°C and 1.50 atm?...
Which characteristics are shared by surfactants and fatty amphiphiles (such as cetyl alcohol)? I Surface active...
1) What is the element with the electron: [Ne] 3s^2 3p^5? 2) The number of unpaired...
3. Describe, quantitatively, how you would make 250 mL of a 40 mM HEPES buffer at...
Use the ∆?? ° information provided to calculate ∆????????? IF7 (g) + I2 (g) IF5 (g)...
Fluorine-20 has a half-life of 11.0 s. If a sample initially contains 36.0 μg of this...
What is the maximum number of grams of N-acetyl-p-toluidine can be prepared from 70. milliliters of...
Consider a solution that is 2.4×10−2 M in Fe2+and 1.1×10−2 M in Mg2+. a) What minimum...
At equilibrium, the concentrations of reactants and products can be predicted using the equilibrium constant, Kc,...
Treatment of phenyl 3-oxo-3-phenyl propanoate with sodium ethoxide (in ethanol) followed by the addition of a...
what is the densest material known at ordinary pressures (1 atm)?
Draw the structures of all possible dichloro derivatives of: a) n-butane b) isobutane
Determine the amount of heat needed to evaporate 100. g of CH3OH. The heat of vaporization...
What volume of a 5.50 M solution of NaNO3 do you need to make 0.550 L...
what color will applies to Lead(II) ion, and elemental Lead? is it colorless, silvary or blue...
42.04 mL of a solution of the acid HNO3 is titrated, and 52.40 mL of 0.5500-M...
A particular first-order reaction has a rate constant of 1.35 x 10^2s-1 at 25.0 degrees celsius....
The Morse potential energy, alpha, has units of inverse length. Convert alpha = 2.10 [au of...
Identify the Brønsted-Lowry acid, the Brønsted-Lowry base, the conjugate acid, and the conjugate base in each...
How many grams of solid ammonium bromide should be added to 0.500 L of a 0.243...
what evidence do you have that TPGS-750M increases the reaction rate? How does TPGS-750M act to...
An air bubble has a volume of 0.520 L at 20 ∘C. A) What is the...
Need help understanding intermolecular attractive forces. I’m in chapter liquids and solids and mainly that was...
Fentanyl is a synthetic opioid used as a pain medication, and lately heavily abused as the...
the world health organisation recommended daily lead intake is no more than 6 micrograms/kg. how much...
Which of the following is the gold standard biomarker of lipid peroxidation? a) Lipid hydroperoxides b)...
10 g of nitrogen is reacted with 5.0 g of hydrogen to produce ammonia according to...
(a) P700 in its ground state has reduction potential +0.5V. Excitation of P700 by light decreases...
Biphenyl (C12H10) is burned in a bomb calorimeter (heat capacity C = 5.86 kJ/˚C). The temperature...
Phenolphthalein is used in titrating KHP with NaOH. Why? Is phenolphthalein required for a potentiometric titration...
What would be the theoretical yield of the reaction between 1.50 mL of 2,4-dimethyl-3-pentanol with 6.5...
How many grams of citric acid, C6H8O7 (Mm = 1925 g / mol), must be added...
The equilibrium constant, K, for the following reaction is 1.80×10-2 at 698 K. 2HI(g) H2(g) +...
What is the pH of a 0.25 M solution of acetic acid? The Ka for acetic...
The freezing point of 53.48 g of a pure solvent is measured to be 41.91 ºC....
What is the osmolarity of each of the following solutions? 1) 3%(m/v)NaCl (strong electrolyte), used to...
A 1.50 gram sample of 2-naphthol and naphthalene was diluted with 2.00 mL of methanol and...
How many milliliters of 1.92 M NaOH must be added to 1.00 × 102 mL of...
From the list below, pick an acid, along with its conjugate base, that can be used...
A sample of gas contains 0.1300 mol of HBr(g) and 6.500×10-2 mol of Cl2(g) and occupies...
If you were travelling outward from the earth in a space shuttle at an altitude of...
consider the titration of a weak monoprotic acid (HA) with a strong base. If the titration...
VSEPR 3D Model of the following: (Show polarity) CH4 CH3Cl CH2Cl2 NH3 H2O H3O+
A sample of pure NO2 is heated to 336 ∘C at which temperature it partially dissociates...
A 0.67 mg sample of nitrogen reacts with hydrogen to form 0.8146 mg of hydride. What...
What feature in its structural formula indicates whether a hydrocarbon is an alkane, alkene, alkyne or...
A solution contains 0.323 M potassium fluoride and 0.416 M hydrofluoric acid. The pH of this...
which of the following does not contain ribosomes? (a) fungi (b) archeae (c) protista (d) all...
Aspirin can be sunthesized in the lab by combining salicylic acid (C7H6O3) and acetic anhydride (C4H6O3)...
Fe(OH)3 <--> Fe3 + 3OH a) Write the appropriate equilibrium expression for the reaction. b) If...
Mike needs to make 2 liters of a 0.3 M NaOHsolution for an experiment. He has...
From a thermodynamic point of view, how does a protein fold into its native and functional...
Can a standard glycine and protein solutions look identical after a ninhydrin test is complete? Can...
A solution containing 10.00 mL of 0.0500 M metal ion buffered to pH = 10.00 was...
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