JustAAA
Home
Questions
Share
Post a Question (with Answer)
Coins
Ask a Question
Log In
Sign Up
Home
/
Chemistry Questions
Search
Chemistry Questions
A stellar object is emitting radiation at 1770 nm. A detector is capturing 7 107 photons...
The enthalpy of combustion (∆Hc) of aluminum borohydride, Al(BH4)3(l), was measured to be -4138.4 kJ/mol [Rulon...
Part A) A certain amount of chlorine gas was placed inside a cylinder with a movable...
If 21.6 grams of diphosphorus pentoxide and 8.2 grams of water combine to form phosphoric acid,...
If 21.6 grams of diphosphorus pentoxide and 8.2 grams of water combine to form phosphoric acid,...
Why should a distilling flask be filled to not more than two-thirds of its capacity at...
If 21.6 grams of diphosphorus pentoxide and 8.2 grams of water combine to form phosphoric acid,...
using the given data, calculate the rate constant of this reaction. A+B yields C+D Trial: 1,2,3...
1. Concept of limiting reagent. A magician can combine 1 pink rose and 1 white rose...
A solution contains 0.625 g of Ca2 in enough water to make a 1930 mL solution....
How much 5.90 M NaOH must be added to 610.0 mL of a buffer that is...
1. Which of the following balanced molecular equations represent reactions for which the rate law expression...
When we say some amino acids are essential or non-essential, what does it mean? Which amino...
1) For which of the following processes does entropy decrease? A. H2(g) + Cl2(g) → 2HCl(g)...
1. When the system Fe3+(aq) + SCN-(aq) ⇌ FeSCN2+(aq) is at equilibrium, which one of the...
How many grams of dipotassium succinate trihydrate (K2C4H4O4·3H2O, MW = 248.32 g/mol) must be added to...
A student prepared the following two mixtures and recorded their absorbances in a cuvette with a...
When 1.542 g of liquid hexane (C6H14) undergoes combustion in a bomb calorimeter, the temperature rises...
Which of the following solids has the highest melting point? C(s,diamond), Kr(s), NaCl(s), H2O(s). Why?
When 1.799 g of naphtalene (C10H8) is burned in a constant-volume bomb calorimeter at 298 K,...
why is urea used in the chromium acetylacetonate synthesis laboratory ?
Can someone explain why the pH of saponification turns out to be a strong base, I...
To 1 kg of argon (considered as an ideal gas), 2000 J of heat is added...
A calorimeter contains 35.0 mL of water at 11.5 ∘C . When 1.30 g of X...
Use the following pair of reduction half-reactions to design a galvanic cell. Then write in the...
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial...
Which solution is most acidic (that is, which one has the lowest pH)? 1.0 M HF...
1) What is the pH of a 0.100 M NH4Cl(aq) solution? 2) The reaction A(aq) +...
Describe the relationship between molecular charge and solubility in organic or aqueous media. Why is this...
A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL of...
At 518 C, the half-life for the decomposition of a sample of gaseous Acetaldehyde (Ethanal), initially...
What is the pH of 0.020 M aniline (Kb = 4.3*10^-10)?
For a weak acid/strong base, why is the initial region of titration curve flat? Why does...
For a square planar complex ML4 where L is a σ donor and π acceptor, sketch...
consider the reaction 2O3<-->3O2, hrxn=-285.4 kj/mol. in which direction will the reaction shift when the following...
7.1 Assume that the density of solid water is 920 kg m-3 and that of liquid...
Calculate the pH of a solution that results from mixing 27 mL of 0.13 M methylamine...
850.0 gra of flourine gas F2 is removed from a 200.0 L-tank ay 40.0 C° and...
Now use the tables of the absolute entropies and enthalpies of formation to compute the values...
3. Determine the pH of a buffer that contains 0.5 mole HOCl and 0.5 mole NaOCl...
The rate constant of a chemical reaction increased from 0.100 s−1 to 3.10 s−1 upon raising...
An unknown compound contains only C, H, and O. Combustion of 8.30 g of this compound...
Greetings, working on a buffer lab report, pH of 50.0 mL H2O + 1.00 mL of...
Calculate the pH of 100.0 mL of a buffer that is 0.070 M NH4Cl and 0.155...
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid...
1.)What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and...
a) A chem 1314 student named richard B. Lee needed 12.8 ml of .112 M NaOH...
Which compound has the largest Rf value using standard thin layer chromatography (TLC)? a. para-nitrophenol b....
Match: Substance ....... Definition ____Lewis acid A. Provides H+ in water ____Bronsted-Lowry acid B. Provides OH...
What is the cell potential of the following voltaic cell if the Ksp of Ag2SO4 is...
Resorcinol, used in the manufacture of plastics and pharmaceuticals, has the following elemental analysis: 65.44 %...
6. Determine the hybridization and explain your answer for the P atom in PH3.
If you are provided 4.00 kg of TiO2, 1.00 kg of C and 2.00 kg of...
A beaker with 1.90×102 mL of an acetic acid buffer with a pH of 5.000 is...
Consider C3H8 (g) + 5 O2 (g) à 3 CO2 (g) + 4 H2O (l), with...
A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.57 nm....
A flow of methane is 8,000 scfm (standard cubic feet per minute). What is the mass...
List all the possible reactions of pyruvate.
a) why is the bicarbonate solution basic based on Ka and Kb values? b) why is...
A 5.171 g sample of a solid, weak, monoprotic acid is used to make a 100.0...
If the enzyme responsible for this reduction is an alcohol dehydrogenase (an enzyme that reduces ketones...
You desire to create a solution with a pH of 3.03. If you add 0.533 moles...
1) Use the integrated rate law to calculate the concentration of tert-butyl chloride at t =...
what is the pH of a 0.100M soln of H2SO4? Given Ka1= 1.70x10-2, Ka2=6.20x10-8 answer is...
Consider two hypothetical salts, MX and QX2. The Ksp of both salts is 4.0 × 10–18....
A total of 2.00 mol of a compound is allowed to react with water in a...
In a gas mixture, the partial pressures are argon 455 mmHg , neon 90 mmHg ,...
For a buffer of H2PO4- and HPO42- with concentrations of .4M and .6M respectively with a...
1. You are planning to go on a strenuous hike and are advised to eat plenty...
1.0 x 107 m2 of vegetation used on roofs of downtown buildings produce 100 g of...
Express the following in terms of αp, βT, Cv, Cp, S, V, T, P. ∂G/∂P at...
You have 875 mL of an 0.49 M acetic acid solution. What volume (V) of 1.30...
Calculate the concentration of bicarbonate ion in a 0.100 M solution of sodium carbonate. Ka1 and...
The pH meter was mistakenly calibrated to be 1.0 pH unit higher than the buffer. a....
Two 23.0 mL samples, one 0.200 MKOH and the other 0.200 M CH3NH2, were titrated with...
A 2.211-g sample of a solid, weak, monoprotic acid is used to make 100.0 mL of...
100. g of ice at 0 degrees C is added to 300.0 g of water at...
Calculate [H+] for each of the following solutions A) [OH−]= 3.9×10−4 M B) [OH−]= 8.3×10−9 M...
You and your lab partner are studying the rate of a reaction, A + B -->...
Consider a glass of 212 mL of water at 25°C. Calculate the mass of ice at...
‹
1
2
...
74
75
76
77
78
79
80
...
124
125
›
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
Ask a Question
ADVERTISEMENT
Active Questions
How does leadership affect teamwork?
asked 8 minutes ago
Suppose a sample of 45 measurements gave a data set with a range of –8 to...
asked 15 minutes ago
5. Some of examples shown in this chapter are from a traditional ERP system, SAP. Consider...
asked 23 minutes ago
The cost of a leading liquid laundry detergent in different sizes is given below. Size (ounces)...
asked 26 minutes ago
Consider the following hypotheses: H0: p ≥ 0.48 HA: p < 0.48 Compute the p-value based...
asked 34 minutes ago
Greatest common divisors: 20 and 240 240 and 240 72 and 128 and decompose number 210...
asked 36 minutes ago
Testing is meant to show that a program does what it is intended to do. Why...
asked 47 minutes ago
What is proofing rod in physics-electrostatics
asked 49 minutes ago
A student wants to determine if the population of his state prefers Pepsi to Coke. The...
asked 55 minutes ago
PART A. Let's say that a business has 400 employees, 300 of whom are male and...
asked 59 minutes ago
Basically I’m trying to split the data into numerical and categorical variables and then look at...
asked 1 hour ago
By hand make an ordered stemplot of the variable NumHurricanesCentury by hand. Use stems of 5....
asked 1 hour ago