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A. A sample of oxygen gas at a pressure of 0.986 atm and a temperature of 23.3 °C, occupies a volume of 563 mL. If the gas is compressed at constant temperature until it’s pressure is 1.47 atm, the volume of the gas sample will be ______ mL.
A mixture of methane and carbon dioxide gases, at a total pressure of 648 mm Hg, contains 2.03 grams of methane and 6.40 grams of carbon dioxide. What is the partial pressure of each gas in the mixture? PCH4 =
PCO2 =
how many grams of sodium are needed to produce 19.4 L of hydrogen gas according to the following reaction at 25 °C and 1 atm? Sodium (s) + water (l) > sodium hydroxide (aq) + hydrogen (g)
A gaseous hydrocarbon, in a volume of 23.4 L at 392 K and a pressure of 3.16 atm, reacts in an excess of oxygen to give 165.7 g of H2O and 404.7 g of CO2. Determine the molecular formula of the hydrocarbon
What is the differences between criminal and civil cases ? (200 words, 5 marks)
A 15.8 g mixture of H2S and C2H6 gases is burned in enough oxygen. After drying the products the mole fraction of SO2 in the mixture is found to be 0.25. What volume of 0.1M KMnO4 solution is necessary to react with the SO2 in the burning products?
SO2 + KMnO4 +H2O - - - > MnSO4 + K2SO4 +H2SO4
Direction: Answer the following and illustrate each under the normal curve:
1. Compute the probability area to the left of z = -1.25.
2. Compute the probability area above z = 1.
3. Find the probability area between z = -0.25 and z = 1.5.
4. Find the 90th percentile of a normal curve.
5. Compute the upper 5% of the normal curve.
a) A solution was prepared by dissolving 0.02 moles ethanoic acid in
water to give 1 L of solution. What is the pH?
b) to this solution was added 0.008 moles of concentrated sodium
hydroxide (NaOH). What is the new pH? (In this question you may
ignore changes in volume due to addition of NaOH).
Compare the Go-back N protocol with the rest of the protocols for effective frame transmission in Data link Layer detailed summary?
An organization is granted a block of addresses with the beginning address 150.25.0.0/24. The organization needs to have 3 subblocks of addresses to use in its three subnets: one subblock of 11 addresses, one subblock of 40 addresses, and one subblock of 125 addresses. Design the network and plot it completely with respective subnets, IP range, Network IDs.
