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Three atoms of iron (Fe) are to be combined with four molecules of oxygen (O2). How many total iron atoms and oxygen molecules will be combined during the formation of Fe3O4?
Flourine gas reacts with ammonia gas to form N2F4 and HF. How many grams of NH3 are required to form 130 grams of HF?
Why does adding 6 M HCI to the yellow solution of methyl orange tend to cause the color to change to red? (Note that in solution HCI exists as H+ and Cl ions.)
Above that are the mantle and crust. if the average density of the Earth is 5.5 g/cm^3, what is the average density of the Earth's mantle and crust?
What is the root mean sqaure velocity of an sulfur molecule at 275 degrees?
when you heat popcorn, it pops because it loses water explosively. Assume a kernel of corn, weighing 0.125 g, weighs only 0.106 g, after popping. Calculate the percentage of water in the kernel of c
Write a Literature review on application of geophysical techniques using electromagnetic induction as a tool for sustainable soil and water management of agricultural fields in the humid tropic Car
Determine the voltage produced by a galvanic cell composed of two aluminum electrodes, one in 0.10 M Al(NO3)3 and the other in 0.50 M Al(NO3)3.
In gluconeogenesis, the second pathway we will study this semester, the enzyme fructose-1, 6-biphosphatase hydrolyzes fructose-1, 6-biphosphate to fructore-6-phosphate and Pi. What is the free energ
Which of the following statements is true about the following reaction? 22.4 L of CO (g) are produced for every liter of C H O (aq) reacted.
At 200°C, in the reaction below, the molar concentration of A was 7.02 M after 1.03 s and 1.84 M after 7.86 s. What is the average rate of reaction in M/s?
What is the polar Lewis dot structure of C2H2Br2
Estimate the pH at the equivalence point of an HOAc solution if 25.5 mL of this solution required 37.5 mL of 0.175 M NaOH to reach the equivalence point (Ka = 1.8 x 10-5).
An experiment is done where the AAUCCC RNA template on the telomerase is mutated. Will there be a change in the telomeric sequence as a consequence of this mutation? Explain
Calculate the concentrations of all species in a 1.08 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
A 1.00 qt metal can contains 0.150g of He at a temperature of 20 degrees celsius. What is the pressure (in atm) inside the can? Is this pressure greater or less than standard atmospheric pressure.
You have discovered a drug that inhibits the activity of the enzyme inorganic pyrophosphatase (do you recall what is the functi of this enzyme?). What effect would this drug have on DNA synthesis?
A 588 g chunk of iron is heated to 97.5.C. Then it is immersed in 247 mL of water orig-inally at 20.7.C. When thermal equilibrium has been reached, the water and the iron are both at 36.2.C. Calcula
Calculate the energy in joules and calories required to heat 24.0g water from 20.0C to 27.7C
What is the difference between sterility and rna and dnaese free when talking about cryogenic storage tubes?
Explain the genetic importance of the protein zymase in the production of ethanol in a sentence or two.
What mass of sucrose should be combined with 484 of water to make a solution with an osmotic pressure of 8.30 at 310 ? (Assume the density of the solution to be equal to the density of the solvent.)
Use the Miller index notation to describe the positions of each of these ions in the unit cell. Confirm that the unit cell has a net neutral charge.
Mesitylene is a compound consisting only of C and H. If you burn 0.115 g of the compound, and find that it produces 0.379 g of CO2 and 0.1035 g of H2O, determine the empirical formula of the compou
32P decomposes by a first-order mechanism and has a half-life of 14.3 days. How many milligrams of a 298 mg sample remains unreacted after 23 days.