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question: in the following skeleton reaction or unbalanced reaction, 0.350M K2S reacts with 40.00 ml of...
Determine the volume (in mL) of 0.337 M sodium hydroxide (NaOH) that must be added to...
the best fit line of the Arrhenius plot is y = - 26552x + 43.5. What...
After a bomb calorimeter experiment. How do you determine the enthalpy of combustion of a substance...
The ratio of an enzyme catalyzed reaction rate to the uncatalyzed rate (i.e. kcat / kuncat)...
After doing a bomb calorimeter experiment. How do I use the heat capacity of the system...
how do I know the charges of an ionic compound?
Predict the mass of the most abundant fragment signal in the mass spectrum of 2,2-dimethylpentane 29...
What is the molar solubility of silver bromide in each of the following solutions? a. pure...
Which of the reactions below will likely have the largest increase in entropy (ΔSrxn)? 1.) N2H4...
1A: a certain metal crystallizes in a bcc lattice. the atoms have a radius of 1.983...
Which neutral atom is isoelectronic with O2 ?
Cation Group III Quantitative Analysis Lab? We just completed our unknown lab, where we are given...
Explain which gas law applies to the following scenarios, and then in your own words explain...
What mass of silver chloride can be precipitated from a silver nitrate solution by 200mL of...
Part A: Balance each of the following redox reactions occurring in acidic aqueous solution. MnO4−(aq)+Al(s)→Mn2+(aq)+Al3+(aq) Part...
The condensed electron configuration of sodium, element 11, is ________.
1. How many grams of K2SO4 and how many grams of water are rwquired to make...
Hydroxylamine, NH2OH, is a weak base. A 0.010 M solution of hydroxylamine has a pH of...
Give an example of a weak acid and an example of a strong acid. What is...
The Ka of propanoic acid (C2H5COOH) is 1.34 x 10-5. Calculate the pH of the solution...
find pH - answers and work please 2.6×10−2 M HI Express your answer to two decimal...
Please show answer and work! 0.15 M KCHO2 Express your answer to two decimal places. pH...
If a gaseous mixture is made by combining 2.88 g of Ar and 1.47 g of...
how does the concept of resonance explain why the CO3 2- ion has equivalent bond lengths...
Consider the following reaction at 298 K: 2C (graphite) + O2 (g) >>> 2CO (g) Delta...
1.A gas is stored under 2 atm,what is the final volume of a gas if the...
1. (a) The viscosity of glycerol, CH2(OH)CH(OH)CH2(OH), is greater than that of ethylene glycol CH2(OH)CH2OH. Why?
We were given the answers for this question but I don't know how to get to...
3. What will be the possible effect on your results of the following experimental errors or...
How do you determine an atom or ions expected size? I've tried following the rules for...
List four consequences of acid deposition/rain. ["reduces pH" is not a choice]
A mixture of PbSO4 (Ksp1 = 1.6 X 10-8) and PbS2O3 (Ksp2 = 4.0 X 10-7)...
What is the molality of a solution containing 2 mL of isopropyl alcohol and 10.0 mL...
Determine the pH (to two decimal places) of the solution that is produced by mixing 28.7...
What is the molarity of an aqueous solution that contains 9.45% (w/w) NaCl? (Assume that the...
MnO4-+ S2- ? S + MnO2 Note: S is elemental Indicate the numeric coefficient in front...
The normal boiling point of water in an open container is 100∘C. What is true about...
A 100 mL sample of 0.300 M NaOH is mixed with a 100 mL sample of...
The Leclanché dry cell is used to run common devices such as ipads and cell phones....
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid...
To prepare a 17.9 kg dog (assume volume of 17.9 L) for surgery, 0.0215 moles of...
The solubility of AgCrO4 is several times greater than that of AgCl, so the red precipitate...
Solubility of Solids 6. What would the calcium concentration be in a saturated CaSO4 solution? 7....
is it necessary that compounds be colored to be seperated by chromotography?
Which pair of compounds is listed in order of increasing (more exothermic) lattice energy? LiF <...
Which would you expect to have the highest vapor pressure at room temperature? CH2H5OH CH3OH C3H7OH
How does the temperature change in the water correlate to the change in the reaction???????????????? Trial...
For the titration of 10.0 mL of 0.15 M HNO2 aqueous solution (Ka = 7.2 x...
Ammonia gas is synthesized according to the balanced equation below. N2(g) + 3 H2(g) -> 2...
A solution of 5.00 mL of 0.00300 M Fe(NO3)3, 4.00 mL of 0.00300 M KSCN, and...
What happens when an acid reacts with a metal? What happens when an acid reacts with...
Water is fluoridated to prevent tooth decay. (a) How many liters of 1.0 M H2SiF6 should...
Use the following notation for an electrochemical cell for Parts (I) – (III): &
If you take the following chemical equation: Br2(g) ---> 2Br(g) The Kc is 8.08 x 10...
the following are isoelectronic species: N3-, O2-, and Al3+. Rank them in order of increasing _______<________<__________...
The molar heat capacity for carbon monoxide at constant volume is CV,m = 20.17 J/(K·mol). A...
In combustion analysis method we burn the organic compound in oxygen supply, doesn't it effects the...
Calculate the temperature, in K, of 2.20 moles of gas occupying 3.70 L at 3.12 atm.
The Food, Drug and Cosmetic Act a. Is about the regulation of physical “things” most of...
The products of complete combustion are carbon dioxide and water. true or false Part A The...
1. Differentiate between an equivalence point and an endpoint in an acid-base titration. 2. What is...
7.Aluminum cans can be converted into alum [KAl(SO4)2 · 12 H2O] and hydrogen gas via a...
This is a lab question about Voltaic Cells. PLEASE ANSWER BOTH QUESTIONS. Anode Cathode Voltage 1...
In the reaction potassium fluoride with potassium chromate and sulfuric acid, the products are fluorine gas,...
As a technician in a large pharmaceutical research firm, you need to produce 150. mL of...
You have 525 mL of an 0.33 M acetic acid solution. What volume (V) of 1.30...
An urban legend suggests that some people add salt to water used for boiling potatoes or...
Why does factor ix have the same catalytic triad in the amino acid structure as chymotrypsin...
1) Determine the potential of a platinum electrode (vs. SHE) when placed in the following solutions...
1)Dilute a solution that has an intial concentration of alcohol of 14.5% down to 3%. 2)...
In their flat configurations, is cyclopentane or cyclopentanone more stable and why?
What should the molar concentrations of benzoic acid and sodium benzoate be in a solution that...
3. Which solution has the highest boiling point: 1.0 M CH3CH2OH or 1.0 M NaBr? Justify...
A reaction of 38.3g of Na and 52.9g of Br2 yeld 60.8g of NaBr what is...
A buffer solution is prepared by mixing 78.9 mL of 0.0419 M acetic acid with 35.9...
Balance the following redox equation in acid MnO4-+SCN---> SO4^-2+CN-+Mn2+
Which phenol is more acidic? explain a. phenol or p-hydroxybenzaldehyde b. m- cyanophenol or p-cyanophenol c....
How will an increase in pressure affect each of the following systems at equilibrium? SO2(g) +...
Write the acid dissociation equation for the dissociation of the weak acid H2PO4- in water.
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