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Explain the minimum amount of ethanol required to re-crystallize 2.0 gram sample of compound X when the solubility of an unknown compound X in ethanol is found to be 0.21 grams per 10 mL at 0o
Determine the numbers of grams of SiCl4are obtained in the reaction of 2.8 g of silicon with excess the chlorine in the direct reaction of silicon with Cl2 the yield of SiCl4 is 50 percent?
The element Mercury, Hg, is a silvery liquid at the room temperature. The normal freezing point for Mercury is -39.9oC, and its molar enthalpy of fusion is? Hfusion =2.29 KJ/mol.
The final temperature of the mixture is 31.1 degrees C. What is the specific heat capacity of the metal alloy when a 53.0g metal alloy ingot at 93.0 degrees C is added to 290g of water at t
When 30.5g nitrogen and 56.6g calcium gas undergo a reaction that has a 90.0% yield, explain what mass of calcium nitride produces? Ca +N2--> Ca3N2 (unbalanced)
If the activation energy for this reaction is 52. KJ/mole, determine the rate constant at a temperature of 30.0°C? The rate constant for a certain chemical reaction is 74.0s-1 at a temperat
If the initial concentrations Br2 and H2 in a closed container are 1.00 M, explain what will be the concentration of HBr after the system finally reaches equilibrium?
What will be the concentration of HF after the system finally reaches the equilibrium if the initial concentrations H2 and F2in a closed container are 1.00 M.
Estimate the frequency and wave number of the J = 2← 1 transition in the pure rotational spectrum of 12C 16O. The equilibrium bond length is 112.81pm.
Determine the intermediate drawings of the cyclic carbonation and bromonium? Problem is found on page 254, number 38.
A single reactant A undergoes parallel first-order reactions to give products B and C with the respective rate constants kc=1.4E-3s-1 and kb=7.0E-3 s-1.
The store owner wishes to sell coconut coffee which cost $4.50 per pound and vanilla coffee which cost $6 per pound to make 250 pounds of the mixture which sells for$5.50 per pound. How much of each
How can consider the reaction among hydrogen gas and nitrogen gas to form ammonia: 3H2(g) + N2(g)-->2NH3(g) Determine the numbers of grams of ammonia could be produced by the reaction of 6.00 lit
Draw the form of an A3M2X4 spectrum, where the A, M, and X are protons with the distinctively different the chemical shifts, and JAM > JAX> JMX. Determine the total number of lines in the s
Explain what amount of heat energy, in joules, must be removed to condense the 17.7 g of water vapor at the 114°C to liquid at the 32.3 °C when the specific heat for steam is 2.03 J
Schools custodian is mowing grass on the football field by cutting the boarder around field. Field is 120 yards long by 50 yards wide. How wide will be boarder when he has mowed half of area of foot
A 10.00 mL solution of sodium acetate was titrated with the 0.214M HCl, requiring 15.77 mL of acid to reach the equivalence point.
Determine the numbers of moles of H3PO4 were in the sample when a 20.0 mL sample of H3PO4 was titrated with0.0500 M NaOH, requiring 17.84 mL of base to completely neutralize all of the acid.
A voltaic cell has an iron rod in 0.30 M iron (III) chloride solution for a zinc rod and the cathode and in the 0.20Mzinc sulfate solution for the anode. The half-cells are connected by a s
If the initial concentration of chlorine is 0.0300 M and of bromine monochloride is 0.0200 M, determine the equilibrium concentration of bromine?
Explain which of the following systems will have an energy level separation that is largest A proton in a 400 MHz NMR spectrometer
Both trans and cis isomers of 3-methoxycyclohexanol are found as components of a group of antibiotics known as macro ides. Both 3-methoxycylohexanols are chiral.
Calculate molecular geometry of the molecule PCl2F3 by using the VSEPD theory and record this structure and any deviations from the ideal bond angles. So do you calculate the Cl atoms to occupy axi
A solution were made by calculating the 1.000 moles of Copper II sulfate to make the 1.000L of solution. Suppose you need to calculate out an exact volume of this solution (among the 20 and 40mL). H
Determine the numbers of energy in kJ/mol is needed to remove the electron from the following orbital in an H atom: