JustAAA
Home
Questions
Share
Post a Question (with Answer)
Coins
Ask a Question
Log In
Sign Up
Home
/
Chemistry Questions
Search
Chemistry Questions
Calculate the concentration of all species in a 0.12 M KF solution. [K+], [F−], [HF], [OH−],...
1) Phenol red is an indicator that changes color over a range from pH=6.4 to pH=8.0....
In the saponification of fats, why is ethyl alcohol used as a solvent instead of water?
at 25 degrees Celsius, for every I kj lowering of activation energy, the reaction rate will...
Determine the pH of each of the following two-component solutions. A) 0.110 M in NaCl and...
How much heat is required to convert 32.5 g of ethanol at 28 ∘C to the...
How many grams of magnesium nitrate can be produced from 50.0 mL of a 2.0 mol/L...
What is the ratio of Burgers vector magnitude in FCC crystals of Cu and Al.
A gas chromatogram of the organic components of a sample of beer using a column that...
If you double the amount of enzyme present in your activity assay, should the activity double?...
You have constructed a quinhydrone concentration cell with buffers of pH = 4.2 and pH =...
1) For the reaction between Na3PO4 and BaCl2 provided the following: Include the state of matter...
Use the pH measurement you made for each NH3 solution to calculate a value of Kb...
What principle is chromatography based on?
Which of the following aqueous solutions should have the lowest boiling point? 0.50 m KCl 2.0...
what is the equivalent point of a titration? give a precise definition
Values of the rate constant for the decomposition of N2O5 at four different temperatures are as...
The enthalpy of vaporization for water is given by ∆Hvap = 44.0 kJ/mol. Given the normal...
Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid,...
Determine the pH of each of the following solutions. a. A solution prepared by mixing 20.0...
A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL of...
Which set of values is correct for an electron occupying a 4d orbital? a. n =...
Explain the enthalpy of vaporization (numerical value) at the critical point, and discuss implications of this...
P4(s) + 6Cl2(g) ==> 4PCl3(l) If 112g of P4 and 303g of Cl2 react what mass...
Calculate the pH of a 0.016 M aqueous solution of calcium acetate, Ca(OAc)2. (For HOAc, Ka...
a monoprotic weak acid HB has an acid ionization constant Ka of 5.920x10^-10. Using only .300...
A certain monatomic gas has specific heat cV = 0.0356 kcal/kg⋅C∘, which changes little over a...
What is the activity coefficient of H+ in a solution containing .020 M HCl and .010...
Rank the following elements in order of increasing ionization energy: Ge, Rb, S, Ne
A buffer is prepared such that [CH3COOH]0 = [CH3COO–]0 = 0.100 M. What volume of 0.125...
1. Simple Cubic: (Let r = 1.00 A) Show all work. Can you please explain this...
How many mL's of 4.00 M HCl (aq) are required to prepare 500.0 mL of 0.200...
Consider the following reaction at 195 K: 2Cu2O (s) ----> 4 Cu (s) + O2 (g)...
can someone explain the extraction of carboxylic acid from phenol in steps in a lab setting...
What type of atomic orbitals of the central atom mix to form hybrid orbitals for FCN?...
Propose a test based on the qualitative analysis scheme which would allow you to distinguish between...
Part A A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company,...
For the reaction, calculate how many grams of the product form when 24.4 g of O2...
A piece of solid lead weighing 45.3 g at a temperature of 308 °C is placed...
What is the minimum mass of Na2CO3 that must be added to 39.7 mL of a...
A large organic molecule has a mass of 1.50×10−21 kg . What is the molar mass...
4.05 g of methane is burned and all of the heat is from this is absorbed...
What the net ionic reaction for zn+mg(no3)2, fe +mg(no3)2, cu+mg(no3)2,Al+mg(no3)2, Fe+Zn(no3)2 , Cu+Zn(no3)2, Cu+Fe(no3)3
Use the periodic table to write electron configurations for each of the following elements. Represent core...
The following data were obtained for repetitive mass measurements of a 1.000-g standard on a top-loading...
From the following data calculate the ΔHrxn for the following reaction: 2 C(s) + 2 H2O(g)...
0.50 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 6.0 L of...
Which of the following solutions would have the largest percent ionization? Assume that they 5) are...
Compare and contrast the Biuret reaction, BCA, and Bradford assay in chemical detail. Explain if there...
Balance the equations of reaction NH4VO3 --> (NH4)6V10O28•6H2O V10O28^6- + H2SO3 --> VO^2+ + SO3 (g)...
Determine the pH at the equivalence (stoichiometric) point in the titration of 31 mL of 0.15...
An 800 mg sample of chromium ore was dissolved and the chromium oxidized to chromate ion....
A sample of acetic acid solution has a freezing point depression of 2.0 C. What is...
9.5×10−2 M in HF and 0.225 M in HC6H5O What's the pH?
Synthesis of Aspirin: How esterification reaction that yields aspirin? How is crystallization technique (heat solution of...
Balanced Equations: Reaction 1: 1 NaHCO3(s) → 1 NaOH(s) + 1 CO2(g) Reaction 2: 2 NaHCO3(s)...
. If 2.00 mol of H2 and 1.00 mol of I2 come to equilibrium at this...
In a constant-pressure calorimeter, 65.0 mL of 0.830 M H2SO4 was added to 65.0 mL of...
calculate the freezing point of a solution having 257 grams of naphthalene (C10H8) dissolved in 500...
would the process filtration you used to separate sand from salt be effective in separating salt...
Consider the reaction: Br2(g)+Cl2(g)⇌2BrCl(g) Kp=1.11×10−4 at 150 K. A reaction mixture initially contains a Br2 partial...
this experiment was performed with excess of Fe 3+ over SCN- in most of the solutions....
Assuming an efficiency of 36.30%, calculate the actual yield of magnesium nitrate formed from 139.9 g...
Suppose you started with 0.105 g of cholesterol (solid), and 0.119 mL of nonanoyl chloride (pure...
A mixture containing 0.250 mol SbCl3, 0.250 mol Cl2, and 0.500 mol SbCl5 comes to equilibrium...
In a coffee-cup calorimeter experiment, 10.00 g of a soluble ionic compound was added to the...
A reaction with stoichiometric equation 1/2A + B = R + 1/2S has the following rate...
When solutions of Al(NO3)3 and NaOH are mixed, Al(OH)3 precipitates as a solid according to the...
In a titration of .4534g of an unknown monoprotic acid, 45.95 mL of 0.1172M of NaOH...
If equal masses of the following substances aborb the same amount of heat which will experience...
Part A 3.41×10−2M HNO3. Express the pH of the solution to three decimal places. pH = _____...
Question 1 How many electrons must be lost by the metal strontium (Sr) in order for...
Iodine-131 is one of the many radioactive isotopes resulting from nuclear bomb explosions. how long would...
What is the osmotic pressure of seawater at 298 K, given the concentrations of the major...
The spacing between rotational levels for HCl is about 20.7 cm-1. Use this value to calculate...
Consider the following system at equilibrium where H° = -111 kJ, and Kc = 0.159, at...
The osmotic pressure of a 10.811 mM solution of (NH4)3PO4 is 482.914 mm Hg at 11.41...
directive effects in the bromination of vanillin experiment: Describe and explain the possible effect on your...
Rate Law: Iodination of Acetone Experiment X trial initial [A] initial [B] Rate (M/s) #1 1.00...
If the reaction of Mo(CO)6 with mesitylene were conducted in the presence of air, what would...
‹
1
2
...
71
72
73
74
75
76
77
...
124
125
›
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
Ask a Question
ADVERTISEMENT
Active Questions
For delta-delta and Y-delta connection, analyze these configurations line voltage and current variation with necessary circuit...
asked 15 minutes ago
Why does the author say the freedmen’s Bureau “ did the work of Hercules?”
asked 44 minutes ago
the text file is given but extremely long do i would appreciate the just the code...
asked 1 hour ago
Write the query that lists the PID, FirstName, LastName, MajorCode, and MajorName of every student. Write...
asked 1 hour ago
I am to create three different versions of the following C program code below that implements...
asked 1 hour ago
Name two methods by which hexylamine can be seperated from benzoic acid.
asked 1 hour ago
Prove that e is not bridge if and only if e is in a cycle. (graph...
asked 1 hour ago
Explain how to implement online orders. What software is available, does/can it communicate with payment systems...
asked 1 hour ago
2. A. Put the following set of data into a frequency distribution; include both absolute and...
asked 1 hour ago
In a differential amplifier, the noninverting input is 3cos(600t + 45°) mV and the inverting input...
asked 1 hour ago
Write a function called isLowerCase that takes as a parameter a char and returns a boolean...
asked 1 hour ago
Compare and contrast a “web service” and an SaaS solution within the context of cloud computing
asked 1 hour ago