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Chemistry Questions
Does a precipitate form when a solution of calcium chloride and a solution of mercury(I) nitrate...
1. What is the reaction mechanism when 2-butanol is reacted with PBr3? How do you know...
The vapor pressure, P,P, of a certain liquid was measured at two temperatures, T.T. The data...
Draw the structure of a dipeptide of lysine-glycine (in that order!) at a pH of 7....
1- What is the approximate specific heat in J/(goC) of a metal whose M.W. is 67.3...
What is the molar concentration of a silver nitrate titrant if 42.51 mL of the titrant...
Calculate the molarity (M) of 155.4 g of H2SO4 in 1.230 L of solution. Express your...
To what volume should 34.00 mL of a 7.60 M HCl solution be diluted to prepare...
1. At 1 atm, how much energy is required to heat 35.0 g H2O(s) at −10.0...
A 1.22 m aqueous solution of an ionic compound with the formula MX2 has a boiling...
In a lab experiment, 5.2 g of Mg reacts with sulfur to form 12.1 g of...
calculate the wavelength and energy of a photon that is ejected from a hydrogen atom when...
The solubility-product constants, Ksp, at 25 ∘C for two compounds [iron(II) carbonate, FeCO3, and cadmium(II) carbonate,...
Both nitrogen and phosphorus belong to group 15 of the periodic table;thus, the same chemical and...
Gravimetric Analysis -- Binary Mixture Amounts of tin may be alloyed with copper to produce bronzes...
Using the "unit conversion method", derive an equation to calculate the heat produced from the HCl-NaOH...
What mass of NaOH is needed to precipitate the Cd2+ ions from 40.0 mL of 0.510...
The activity of many enzymes is regulated by reversible covalent modifications. Kinases add a phosphate group...
what is the net ionic reaction of MgCl2 + SrCl2 & what is the net ionic...
You need to make 1 L of 100 mM acetate buffer at pH 5. But oh...
Consider four 1L flasks labeled A, B, C, and D filled with the ideal gases He,...
High buffer capacity: NaH2PO4-H2O (1.3804g) K2HPO4(0.551g) Target pH=6.7 Volume of buffer=40mL 1. using activity coefficients to...
Sodium chlorite is used to bleach pulp and raw cotton. The amount of sodium chlorite available...
If the Ka of a monoprotic weak acid is 5.5×10−6, what is the pH of a...
How do you calculate the mole fraction and weight percentage using H NMR
The propane, C3H8, in a fuel cylinder, undergoes combustion with oxygen in the air. C3H8(g)+5O2(g)⟶Δ3CO2(g)+4H2O(g) How...
(6) Strong base is dissolved in 555 mL of 0.400 M weak acid (Ka = 3.77...
For the reaction 2 NO(g) + Cl2(g) → 2 NOCl(g) a possible mechanism is (1) NO...
An unknown sample of metal with a mass of 20.0 grams absorbed 210 joules of energy....
Titration curve question: 1) A 22.6 mL sample of a 0.394 M aqueous hydrocyanic acid solution...
Lastly, one method used to detect the presence and quantity of lead ions in water involves...
In an electrolysis of water experiment, 39.75 mL of H2 gas was collected over water at...
A.) How many ATOMS of carbon are present in 5.64 grams of carbon tetrabromide ? B.)...
Given the following information, construct a Born-Haber cycle to calculate the lattice energy of CaC2(s): Net...
List three sources of error you expected to encounter in measuring molar mass of a volatil...
Calculate the volume of 1:5 diluted vinegar which would be titrated by 35.00mL of 0.1000 M...
The objectives for this discussion forum will introduce you to the fundamental concepts of energy and...
1. Write balanced equations for the following nuclear reactions: a) Naturally occurring thorium-232 undergoes a decay....
20.2 percent by mass hydrochloric acid with a density of 1.096 g/ml, calculate the molarity of...
15. For the following problems, calculate the answer using the correct significant figures rules. a) 0.7856...
Draw any stable compound which has the formula C15H26N2O2. I will require that all heteroatoms (N's...
The compound MX has a Ksp = 2.91 × 10−7. Calculate the concentration of M+ ions...
Calculate the cell potential for the reaction as written at 25.00 °C , given that [Mg2+]=0.754...
Citric Acid has 3 pKas: 3.13, 4.76, and 6.39. How many grams of sodium citrate monobasic...
1.59 mol of Xe gas occupies 1,254 mL at 100°C. Assume this gas does not behave...
Calculate the osmotic pressure at 25°C across a semipermeable membrane separating seawater (1.14 M total particles)...
Pyridine, C5H5N, is probably better know as a Lews base, but it also acts as a...
I'm studying for the MCAT and reviewing equilibrium. I am having trouble understanding why an answer...
A) The half-cell is a chamber in the voltaic cell where one half-cell is the site...
Consider the titration of 30.0 mL of 0.0100 M CoSO4 with 0.0150 M EDTA in a...
A voltaic cell consists of a Zn/Zn2+ half-cell and a Ni/Ni2+ half-cell at 25 °C. The...
A student mixed 0.0100L of 0.500mol/L of KOH (aq) and 0.0100L of 0.500mol/L of H2SO4. The...
Discussions: Please kindly answer the following child questions AS IN DETAILS AS POSSIBLE (Child questions are...
The mean activity coefficient of a 0.2 b Mg(NO3)2 solution is 0.13 at 25oC. Calculate the...
50.00 mL of sulfuric acid (H2SO4) is titrated with 38.65 mL of 0.100 M NaOH according...
Which of the following statement is FALSE concerning the drug Prontosil? A. It was found to...
A sample of tert-butyl bromide (2-bromo-2-methyl propane) has been contaminated with some methyl bromide. The NMR...
What is a polyprotic acid? 2. How many moles of H3O + are present in 50...
Use the standard molar entropies B to calculate the standard entropy of reaction for the oxidation...
For a reaction to be exothermic, what must be true (do not consider solvent effects)? The...
A gas in a flexible container occupies 199 ml at 27ºC and 1.35 atm. If the...
Application Questions 1.Draw the mechanism for the sulfonation of benzene. Use HSO3+as the electrophile. Draw the...
1) f phosphorus (P), with an atomic weight of 31, combines with hydrogen (H), with an...
A 35.3 mL sample of a 0.309 M aqueous hydrocyanic acid solution is titrated with a...
What is the molar mass of a gas which has a mass of 834 mg, a...
what salt would result if sulfuric acid (H2SO4) was neutralized with lithium hydroxide (LiOH)?
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution...
If the concentration of substrate in an enzymatic reaction is set to the Km of the...
Determine the volume of a solution of 1 M HCl that must be added to adjust...
2-chloro-2-methylhexane is reacted with methanol. What is the IUPAC name of the single major expected E1...
How many grams of bismuth oxide would you need to react with excess carbon in order...
Ammonium iodide, a solid, decomposes to give NH3(g) and HI(g). At 406 °C, some NH4I(s) is...
How do you calculate the pH of a solution containing a weak acid or a weak...
10. Select the correct statement. A) In an exothermic reaction, the surroundings releases heat. ...
What is the weight percent (%) acetic acid (CH3CO2H) for a 5.88 m aqueous acetic acid...
A) Use the standard reduction potentials located in the 'Tables' linked above to calculate the standard...
8. Using a calculator, calculate the following parameters and fill-in the spaces provided (8 pts) [H+]...
A student ran the following reaction in the laboratory at 425 K: PCl5(g) --> PCl3(g) +...
2.0g of water (density=1.0g/cm3) displaces how many grams of gasoline (d=0.70)?
A gaseous reaction occurs by a two-step mechanism, shown below. Step 1: A2 ⇄ 2 A ...
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