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Aluminium sulphate, often called alum, is used in paper making to increase the paper’s stiffness and smoothness and to help keep the ink from running. It is made from the reaction of sulfuric acid with the aluminium oxide found in bauxiteore. The products are aluminium sulphate and water. Bauxiteore is 30% to 75% aluminium oxide.
a) Write a balanced equation for this reaction.
b) What is the maximum mass, in kilograms, of aluminium sulphate that could be formed from 2.3x10^3 kilograms of bauxiteore that is 62% aluminium oxide?
If 20cm³ of carbon monoxide are mixed and aparned with 200cm³ of containing 21% of Oxygen .If all the volumes of the results gases at S.T.P . Caculate the total volume of the result gases
If 20cm³ of carbon monoxide are mixed and aparned with 200cm³ of containing 21% of Oxygen .If all the volumes of the results gases at S.T.P . Caculate the total volume of the result gases 2Co(g)+O2(g)=2CO2(g)
50.0 g of ice was initially at −4.0°C and 1 atm. At 1 atm, it absorbed some heat and became 20.0 g of ice and 30.0 g of liquid water in equilibrium with each other. How much heat was absorbed?
3 acids of ph 3,4,5 respectively are mixed. what will be the concentration of H+ ion in the mixture
A balloon containing 0.0400 mol of a gas with a volume of 500 mL was expanded to 1.00 L.
Answer the questions and round answers to nearest hundredth place.
Which equation should you use to find the amount of gas added. What is the final number of moles
Hi
I have a mixture of 2 volatile liquids.
How can I calculate the concentration of each component in the gas phase in equilibrium?
Thanks in advance
Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.025 g of naphthalene is burned in a bomb calorimeter, the temperature rises from 24.25 ∘C to 32.33 ∘C.

Find ΔErxn for the combustion of naphthalene. The heat capacity of the calorimeter, determined in a separate experiment, is 5.11kJ/∘C.
What is the criteria for a complex to act as reducing or oxidising agent
1. Activities
a.) The activity of a pure substance in the reference state is a = 1. With this in mind,
calculate the activity for liquid water at 25C for pressures of 10 bar and 100 bar,
assuming that the molar volume is constant. (4 credits)
b.) Consider two solutions whose solute activities are aB’ and aB”, referred to the
standard state. Show that the difference in the chemical potentials of these two
solutions is independent of the standard state and depends only on the ratio aB’/aB”.
(2 credits)
c.) An aqueous solution of NaCl has a molality of 0.315 molkg-1. At what molality will
an aqueous solution of K2SO4 have the same ionic strength? (3 credits)