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Chemistry Questions
What is the physical state of tungsten (solid, liquid, or gas) at a temperature of 5993K...
Draw the Lewis structure of SnCl₂ with minimized charges and then determine if the molecule is...
The density of gold is 19.3 g/cm3. What volume (cm3) would be occupied by a piece...
In the spectrum of the atom, two yellow lines are emitted, one at 5890Å and the...
Give the percent yield when 14.08G of C02 are formed from the reaction of 2.000 moles...
The lipid bilayer is most permeable to phosphate ions water molecules potassium ions small proteins Compared...
What will be the Kp for the following equilibrium: Cl2(l)→Cl2(g) Select the correct answer below: Kp=PCl2(g)PCl2(l)...
A line in the Balmer series of emission lines of excited H atoms has a wavelength...
Rank the following in order of increasing melting point CO, CO2,CCl4
briefly explain why some chlorines fume in air
If a patient needs to receive 15.00 dL of IV solution that is equivalent to ________...
A sample of O2 is collected over water at 22.0 °C. The volume of the sample...
Determine the pH of the following solutions. (a) 0.00881 M LiOH (b) 0.0616 M perchloric acid...
Benzer experiment: Reduction of Cys-tRNACys generates Ala-tRNACys. If the resulting Ala-tRNACys were added to an in...
Calculate delta H for the combustion of octane: 2C8H18 (l) + 25O2 (g)-> 16CO2 + 18...
Is it possible to preform a 99.0% separation of 0.010 M Ce3+ by adding oxalate (C2O4...
which structure represents 4,4,- dichloro -1- hexene
A first order rate law has a rate constant of 0.0011 s-1. If the initial concentration...
The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...
rick left a beaker of 100 mL of clear colorless liquid sitting on the lab bench...
A sample of CaCO3(s) is introduced into a sealed container of volume 0.668 L and heated...
A sample of solid copper is heated with an electrical coil. If 45.3 Joules of energy...
Calculate the pH of the following solutions: Part A: 0.075 M HClO4 Express your answer using...
Ten grams of an unknown acid was added to 50.0 mL of distilled water. The molarity...
A practical reason to convert amines into their salts is that A. salts of amines are...
Flask A has a volume of 1L and contains air at 90 kPa. Flask B has...
Show ALL reaction mechanisms to synthesize trans-1,2-diethoxycyclopentane from chlorocyclopentane. Thank you
What are the concentrations of H3O+ and OH- in oranges that have a pH of 3.98?
The volume of a sample of ideal gas at 27 °C is 342 mL. a. What...
A neutralization reaction between NaOH (aq) and HBr (aq) would give which two products? -------------------- PLEASE...
devise a synthesis of 1,3-cyclopentadiene from cyclopentane
A 2.92-L gas sample in a cylinder with a freely moveable piston is initially at 23.0...
The volume of water in large scale reservoirs is often measured in units of an acre-foot,...
Consider the following reaction: H2 (g) + I2 (g) ⇌ 2 HI (g) Complete the following...
Classify each of the following solutions by writing acidic , basic , or neutral in the...
An aqueous magnesium chloride solution is made by dissolving 7.11 moles of MgCl2 in sufficient water...
The total vapor pressure above a binary solution of components A and B is found to...
Why 5-fluorouracil can inhibit thymidylate synthase?
How many O atoms are in .2500 mole of Ca3(PO4)2? I remember learning how to do...
What is the percent ionization of benzoic acid (HC7H5O2) in a 0.100 M solution of benzoic...
polymer question A polystyrene sample is made by mixing two types of polystyrene chains. The weight
What is the empirical and molecular formula for both pentanoic acid and cyclopropane?
A 250 mL flask contains air at 1.061 atm and 20.3 °C. 5 mL of ethanol...
the enthalpy of combustion of benzene is -3301Kj/mol a calorimeter has a heat capacity of 80j/c....
you have weighed out 0.755g of an unknown monoprotic weak acid and titrated it with 0.497...
Draw the Claisen condensation product of ethyl ethanoate and excess ethyl methanoate.
Question 1: Radium-223 is a radioactive isotope with a half-life of 11.4 days. How long (in...
The synthesis of aspirin will not take place under basic condition. Provide a brief explanation for...
When an amino acid chain folds into a protein, the entropy of the system decreases. Explain...
Vrms=√3RT/M In this root mean square velocity formula, Why and Where does this '3' came from....
What would be the change in pressure in a sealed 10.0 L vessel due to the...
What minimum concentration of Sn2+ would be necessary to make the following reaction spontaneous at 25°C...
How many grams of PbBr2 will precipitate when excess CaBr2 solution is added to 61.0 mL...
Which of the following statements is NOT true about acid anhydrides? A. Acid anhydrides are more...
A 9.32 g sample of 3-ethyl-2,4-dimethylpentane (formula C9H20), is mixed with 7.77 atm of O2 in...
What is difference between a process analytical instrument, and a laboratory analytical instrument? Given an example...
Find the volume occupied by 28.0 g of helium gas at 24.0 ∘C and 1.26 atm...
For the reaction A(aq) ---> B(aq) the change in the standard free enthalpy is 2.71 kJ...
Use the Nernst equation to calculate the concentration of the unknown solution. Base this on your...
f 2.81 moles of potassium reacts with 2.34 moles of oxygen, how many moles of potassium...
2) If yes would we gain more energy from using Nitrogen Dioxide in stead of pure...
7. You make 1 Liter of an aqueous solution containing 9.20 ml of 57.8 mM acetic...
Post Lab-Determination of a Chemical formula Is the formula of the hydrate depend upon the amount...
**SHORT QUESTION** Hello newfound chemists! Again, we are continuing our trek into the study of chemical...
1- Calculate the molarity of a HCl solution that contains 44.2 g of HCl in a...
my percent yield was 40% with Sn2 reaction - synthesis of 1-Bromobutane with simple distillation. what...
The Global Harmonization System of Classification and Labeling of Chemical Substances (GHS) has been adopted by...
Using Boyle’s Law, predict what will happen to the pressure of a gas in a container...
What is the oxidized state of ABTS molecules by incubating ABTS with H2O2? Explain your answer...
Calculate the entropy change when a 822 g sample of mercury is heated from 27°C to...
A liquid has a ΔH o vap of 34.2 kJ/mol and a boiling point of 124°C...
You titrate 25.0 mL of 0.100 M HCl solution with 0.086 M NaOH. What is the...
How many moles of solute are present in the following solutions? 145 mL of 0.17 M...
Which pair of amino acids can contribute to the stabilization of protein structure via hydrogen bonding?...
Calculate the surface-to volume ratio ( in cm^2 of surface/cm^3 of volume) for 1L cube when...
Write the balanced reaction equation between coagulant Al2(SO4)3*13H2O and bicarbonate alkalinity
Part B. Calculate the standard cell potential at 25 ∘C for the reaction X(s)+2Y+(aq)→X2+(aq)+2Y(s) where ΔH∘...
the concentration of glucose c6h12o6 in blood is 90mg/100ml of blood. wht is the concentration in...
Which of the following solutions is the most acidic? Which has the lowest pH? A. 1.0...
(acacH+H2O =acac- + H3O+ ) hi, according to this equilibrium equation , is the following explanation...
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