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Get college assignment help at uniessay writers (Q022) please solve for the attached question
We now examine the effect of PAN formation, assuming a constant concentration [CH3C(O)OO] = 1×108 molecules cm-3 in the air parcel. Rate constants are k4b = 4.7×10-12 cm3 molecule-1 s-1 and k5 = 1.95×1016 exp(-13,543/T).
Write Anode Half reaction and Cathode Half reaction for 1. NaCl 2. NaBr 3. NaI
Classify the solid state of the following substances as ionic crystals, covalent crystals, molecular crystals or metallic crystals: (a) CO2 (b) B12 (c) S8 (d) KBr (e) Mg (f) SiO2 (g) LiCl (h) Cr
16. Write Lewis structures for SeF4 and SeF6. Is the octet rule satisfied for Se? 17. Write Lewis structures for BrF3. ClF5, and IF7. Identify those in which the octet rule is not obeyed
When peroxide is used in rocket fuels, it produces water, oxygen, and heat: 2H202(l)–>2H20(l) 02 (g) How many kilojoules are released when 275 peroxide are allowed to react?
How much heat is required to vaporize 26.0 g of water at 100 ^circ {rm C}? The heat of vaporization of water at 100 ^circ {rm C} is 40.7 rm kJ/mole.
(21) Draw the solvolysis product expected when the following compound is heated in ethanol.
What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of 15 of the heat generated from combustion goes to heat the water (the rest is lost to the surroundings); the density of the fuel is 0.78 the initial temperature of the water is 25.0 and the standard enthalpy of formation of is -224.4 .
A beaker with 180 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 8.00 of a 0.280 solution to the beaker. How much will the pH change? The of acetic acid is 4.760.
Get college assignment help at uniessay writers Explain the principal events of the catabolism of glycerol and fatty acids.
calculate ∆H° for the reaction CH4(g) 4Cl2(g) → CCl4(g) 4HCl(g) Bond energies: C Picture H = 413 kJ/mol, Cl Picture Cl = 243 kJ/mol, C Picture Cl = 339 kJ/mol, H Picture Cl = 427 kJ/mol
Consider a situation in which 186 g of p4 are exposed to 208 g of O2 P4 5O2—> 2P2O5 1.What is the maximum amount of P2O5 that can theoretically be made from 186 g P4 and excess oxygen? 2.What is the maximum amount of P2O5 that can theoretically be made from 208 g of O2 and excess phosphorus?
How long would it take for 1.50 mol of water at 100.0 C to be converted completely into steam if heat were added at a constant rate of 25.0 J/s?
C4H9N is it polar or nonpolar?
What is the minimum volume of a 3.88 M NaOH solution needed to make 150.0 mL of a 0.800 M NaOH solution?
calculate the number of excess reagent units remaining when 148 C6H6 molecules and 1095 O2 molecules react? given: 2C6H6 15O2 → 12CO2 6H2O
– Explain the data related to odour in terms of types of bonds. Do you think that a substance can be relatively volatile and not have an odour? Give an example. – Explain in terms of bonding the variations in melting between the two solids. – Are the relative strengths of covalent and ionic bonds comparable, when melting points are compared? Explain. – At what temperatures do KBr and p- dichlorobenzene melt? – In p-dichlorobenze, are the intermolecular or intramolecular forces greatest? Explain your answer. – Use the periodic table or chart of electronegativities to predict whether or not the following substances are largely ionic or largely covalent: LiF, ICl, Na2O, SO2, and BaI2. LiF ICl Na2O SO2 BaI2 – Give one use for each substance.
LGO for ferrocene
You have a stock solution of 13.6 M NH3. How many milliliters of this solution should you dilute to make 1000.0 mL of 0.250 M NH3? I get that molarity is moles/liter, but what I don’t really get is what you use molarity for or how to manipulate it like in the problem above. I really need an explanation of the steps in solving this problem.
The volume of one Fe atom is approximately 8.37 10-24 cm3, and the density of Fe is 7.874 g/cm3. Calculate an approximate value for Avogadro’s number.
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