Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Polyhalogens, define polyhalogens their structure and chemistry of polyhalogens also brief explanation of pseudohalogens
Calculate how many liters of O2 reacted with excess SO2 according to the following equation: 2SO2 + O2 = 2SO3 if 640g of SO3 are produced at the STP.
Determine the rate constant and half life for the radium decay. Starting with 1.0g of the radium sample, what is the activity after 500yr? The molar mass of Ra is 226.03 g/mol
Determine the number of moles of H2 that are present at equilibrium if a mixture of .300moleof CO and .300 mole of H2O is heated to 700 degrees Celsius in a10.0 L container at the 700 degrees Celsiu
Estimate how many moles of Helium will be in this balloon if the volume changed to 71.7 L when a rubber balloon contains .850 moles of helium had a volume of 17.9 L when the temperature was 23.6 deg
The distribution coefficient, k= (conc. In ligroin/ conc. In water), among water and ligroin for solute A is 7.5. Explain what weight of A would be removed from a solution of 10 grams of A in 100 mL
How many moles of benzoic acid are present? Determine how many moles of sodium bicarbonate are contained in 1 mL of a 10 % aqueous solution?
Discuss how do you calculate the wavelengths of these four lines? Hydrogen has four spectral lines in the visible region. What are the four line colors, the transition from ni to nf?
Carbon from a cypress beam a king of ancient Egypt obtained from the tomb of Sneferru, gave 8.1 disintegrations of 14 C (carbon isotope 14) per minute per gram of carbon.
What fraction of the radioactive iodine would remain after7.0 days? A solution of sodium iodide containing radioactive 131 I was given to a patient to test for a malfunctioning of the thyroid gland
Determine the longest wavelength of light that can be emitted by a transition that ends at E4 for a doubly ionized lithium ion? Discuss how do you calculate for the shortest wavelength?
Determine the hydronium ion concentration and the pH when the 50.0mL of 0.40M NH3 is mixed with 50.0 mL of 0.40M HCl. Show the equation for the reaction in terms of the hydronium ion.
Determine the particle pressure of H2 I2 HI in the flask at equilibrium. 1.00 Liter Flask containing 1.00 moles H2 2.00 moles I2 at 448C Kp= PHI2/PH2PI2
Calculate the mass of NO2 in the final equilibrium equation when 50.0g of N2O4 is added to an evacuated 2.00L vessel and allowed to come to equilibrium with its decomposition product, N2O4(g) <-&
Determine the initial molar concentration of I- if the 3.0 mL of 0.30 M KI is mixed with 2.0 mL of deionized water, 1.0 mL buffer solution, 1.0 mL of 0.02 M Na2S2O3, and 3.0 mL o
What percentage of this Krypton remains after 50years? A nuclear power plant emits into the atmosphere a very small amount of 85 Krypton, a radioactive isotope with a half-life10.76 years.
Calculate the numbers of mL of o.255 M solution of H2SO4 is required to react with the 40.6 g of Fe (OH)3 according to the following unbalanced reaction:
If the photon emitted has a wave length of 434nm, what is the value of ni when an electron in the hydrogen atom makes a transition from an energy state of principal quantum numbers ni to the n=2s
Estimate the properties of an aqueous solution of 1.21 x10-7 M sodium hydroxide and 1.35 x 10-4 M hydrochloric acid in the presence of 0.10 M sodium chloride.
Find out the ligands in the following complex ions Explain how would free F- ion be released from the following complexion, [Alf4]-
What is the molecular weight of the unknown gas? In one experiment the effusion of CHCl3 is detected to be 10.35 min and in a separate experiment an unknown gas is detected at 6.54 min.
A chemistry student is about to make a stock solution of 0.1 molar HCl. He proceeds by adding two 10mL additions of 10M HCL to a 500mL beaker and fill it with water from the sink.
Determine what volume will 307 mL of gas at the 19 degrees C and a pressure of 382 mm Hg occupy if the temperature is reduced to- 87 degrees C and the pressure increased to 772 mm Hg?
At a pressure of 16.5 atm at 19.0 degrees C a gas is placed in a storage tank. As a safety device, there is a small metal plug in the tank made of a metal alloy that melts at 125 degrees C.
Determine how many geometric isomers of this compound should exist? A platinum coordination complex has the formula, [Pt(NH3)2BrCl], and exhibits a square planar geometry.