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Three isotopes exist for potassium. Approximately 93 % of all potassium atoms have a mass of...
Calculate the mass of CaCO3 needed to react with SO2 produced by burning 100kg of coal...
Rainwater is naturally slightly acidic due to the dissolved carbon dioxide. Acid rain results when acidic...
If I have Ba(OH)2 ksp 10x10^-22, Tm(OH)3 ksp 10x10^-24, and Be(OH)4 ksp 10x10^ 0.1-26. Which molecule...
Use Hess's Law to calculate the enthalpy of reaction, ΔH rxn, for the reaction in bold...
Predict how acetylation of histones will change accessibility of DNA. (Please provide a different explanation that...
Solubility of I2(s) in water at 25°C K(I2) = 0.0013, and iodine can with iodine ions...
Twenty-five gram of table salt (NaCl) is dissolved in enough water to make a solution. How...
Diamagnetic (u= 0) complexes of cobalt(III) such as [Co(NH3)6]^3+, [Co(en)3]^3+,and [Co(NO2)6]^3- are orange-yellow. In contrast, the...
Calculate the mass in grams of iodine (I2) that will react completely with 20.4 g of...
Which of the following statements correctly characterizes the rate of evaporation of a liquid? I....
Sulfate, SO42- Add ½ mL 0.1M MgSO4 into a small test tube. Add ½ mL 0.1M...
Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and...
Consider the following classes of molecules. Glycerol Fatty acid Alcohol with higher molecular...
Part C Calculate the molar mass of acetylcholine (C7NH16O2), a neurotransmitter that activates muscles. Express your...
Balance a Redox Reaction (Acidic) ClO3^- (aq)+I2(aq)------->Cl^- (aq)+IO3^-(aq)
1- The normal Boiling Point of liquid benzene is 80.1 oC, with 31.0 kJ/mol of ΔHvap...
Find how much product is being formed ? Then find the activity umol/min? Given use Beers...
If a buffer solution is 0.200 M in a weak base (Kb = 7.9
MCQ>> 3.Which would be useful as a fiber: (a) poly(ethylene terephthalate) or (b) poly(hexylene terephthalate)? 4.In...
3b Two of the adjacent absorption lines in the pure rotational spectrum of 23Na81Br occur at...
Could Carothers have produced strong polyester fibers by (a)ester interchange or (b)Schotten– Baumann reactions using aliphatic...
1.What effect will THE use of a solvent with a higher dielectric constant have on the...
What is the molarity of C12H22O11 solution that contains 5.0g of C12H22O11 in 200.0mL of solution?
A reaction mixture contains 0.89 atm I2 and 1.77 atm I. Which of the following statements...
Some polymers, especially poly(vinyl chloride), lose their flexibility and become more rigid overtime? Specifically explain what...
What is the molarity of Na+ in a solution of NaCl whose salinity is 5.5 if...
The following data are obtained for the gas phase decomposition of acetaldehyde: k (L/mole s) 0.0105 ...
Hi could someone explain, why it is theoretically not possible to do the following reaction: Ba(NO3)2...
Balance the following redox equation in basic solution using the half-reactions method. H2O2 + Cr3+ =...
how can I find potential molecular formula from molecular ion given m/z (mass/charge)? ex: given m/z...
A 5.30M solution of HCl (500mL) is placed in a coffee-cup calorimeter containing 50.0g in ice...
Explain why metabolic defects in different enzymes of urea biosynthesis, although distinct at the molecular level,...
Does the standard state refers to an element is its natural state at 1 atm pressure,...
Cleave maltose and provide a mechanism
A large part of glycogen is stored in skeletal muscle. But this glycogen is not used...
Which of the following pairs is considered to be isoelectronic? Xe and I K and Ar...
uranium in groundwater reacts with naturally occurring calcium phosphate minerals. Given that the uranium solid produced...
I'm working on my gen chem 2's review guide and im completely unsure of how to...
The strongest known acid is fluoroantimonic acid, [H2F][SbF6]. It is 1016 times more acidic than concentrated...
Multiple Choice Please answer all parts of this question. Question 26 with 4 parts: a. Calculate...
(a) Describe the coupling of angular momenta due to orbital and spin motions of electrons in...
Rainwater is acidic because CO2(g) dissolves in the water, creating carbonic acid, H2CO3 (Ka1=4.3×10−7,Ka2=5.6×10−11). If the...
The molar solubility of cobalt(II) sulfide in a 0.241 M sodium sulfide solution is ---- M....
When 1.04g of cyclopropane was burnt in excess oxygen in a calorimeter, the temperature of the...
If we have three different solutions, A, B, and C, each containing 100 g of water,...
If 100. mL of 0.200 M Na2SO4 is added to 200. mL of 0.300 M NaCl,...
iron burns in oxygen to produce iron(ii) oxide. write a complete balanced equation for this reaction....
For the equation: 2 Li + S --> Li2S How many grams of lithium are needed...
At high pressures, real gases do not behave ideally. Calculate the pressure exerted by 29.0 g...
In answering this set of nine questions, you are encouraged to draw a PV diagram, with...
how does entropy cause a liquid to become supercooled?
(a) Calculate the percent ionization of 0.00260 M carbonic acid (Ka = 4.3e-07). % ionization =...
. A) Which one of the following acids has the weakest conjugate base? (4 Pts.) ...
Explain why the heme group is mostly flat, particularly the large ring of a hemoglobin molecule.
Consider two interstitial diffusion events in BCC lattice, (A) via octahedral sites and (B) via tetrahedral...
How do quantized and continuous processes differ? Give a practical example of a continuous change and...
Nitrogen and hydrogen react in the Haber process to form ammonia. All substances are in the...
16. Given: h = 6.6 x 10-34 J-sec En = -2.18 x 10-18 J/n2 (note: Joule...
Why does Ketone has a higher chemical shift than aldehyde on C-NMR. Isn't the carbon on...
is average kinetic energy the same as velocity
When doing a Spectrophotometric Determination of Cooper in Brass Lab explain why it is necessary to...
What is inductance? What is the origin of inductance? What is impedance? How can you use...
if you have a saline solution which is 2.000# mass, and its density is 1.011 g/ml,...
Arrange these atoms from the smallest to the largest atomic radius: C, Li, Na, Ne.
State four factors that influence the intensities of Bragg peaks.
10.45) which of the following molecules would be expected to have zero dipole moments on the...
Is there a mathematical relationship between absorbance and concentration of the solution? If so, indicate the...
Oil Chemistry What is bleachability. what is role of bleachability in oil industry.
Hard water, while not harmful to consume, can cause problems. It can cause scale buildup in...
If liquid water is introduced into an evacuated (zero pressure) flask, the pressure will begin to...
Based on Molecular Orbital Theory, predict the ordering of bond energy and vibrational frequency for O2+...
Based on what we learned from previous lectures on atomic orbitals and what you read about...
Explain particle size and column diameter effects on plate height.
2 MnO4- + 5 C2O42- + 16H+ ----> 2 Mn2 + 10 CO2 + 8H2O what...
The LEAST stable conformational isomer of cis-1-isopropyl-2-methylcyclohexane will have: A. Both isopropyl and methyl groups in...
Draw a potential energy diagram to show the effect that aromatic compounds containing electron-donating groups have...
In the neutralization reaction H2SO4 + 2 KOH ⇌⇌ 2 H2O + K2SO4 If there is...
Consider the reaction when aqueous solutions of potassium sulfide and iron(III) nitrate are combined. The net...
Using 0.200 ml H2O2 10 mL H2SO4 (aq) 1 M Solution titrated with KMnO4(aq) 0.20M In...
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