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Aqueous Ammonium Hydroxide can be used to adjust the pH of a solution. Commercially Ammonia is available at 30 wt% with the remainder water (30% NH3). You would like to convert this commercial Ammonia to household ammonia which is available at 10 wt%. a) What are the mass and mole fractions of the respective components in NH3? b) Assuming you have 1 L of the commercially available Ammonia, how much water would need to be added to dilute the solution to the household dilution of ammonia? c) What is the molarity of the new solution compared to the molarity of the initial solution?
Calculate how many calories of heat are needed to increases the temperature of 550 grams H2O from 12 degree celsius to 18 degree celsius?
You are given some reactions as a. Cl2(aq) + 2NaI(aq)= I2(aq) + 2 NaCl(aq), b. Br2(l) + 2K(S)=2KBr(s), c. Pbs( s) + 4H2O2(aq)= PbSO4(s) + 4H2O(l) you just need to Indicate which element is reduced and which is oxidized in the given equations?
A container of water is heated from 23.5C to 85.0C. This process requires 21,900 Joules of heat. Calculate the mass of the water. (c=4.184 J/g-C)
if .350g sample of cinnabar is heated the org decomposes completly to leave .302 of pure mercury metal.what is the empirical formula of cinnabar?
Differences in boiling points, Rationalize the difference in boiling point between the members of the following pairs of substances:
What is the total sample size (in grams) for a sample of disulfur octoxide which contains 3.52 g of oxygen.
How many moles of NaOH are needed to raise the pH of a 4.50 L tank containing 0.00100 M HCl solution to 3.50?
How do you calculate the force of water hitting a concrete cylindrical pole. The velocity of the water is 2 ft/s, the depth of the water is 10 ft, and diameter of the pole is 3 ft. So what would be the total force exerted on the pole by the water?
How much heat (in kJ) is required to warm 16.0g of ice, initially at -11.0 C, to steam at 112.0 C? The heat capacity of ice is 2.09 J/g*C and that of steam is 2.01 J/g*C.
If the partial pressures of N2, O2 and NO at equilibrium are 1.5 atm, 2.5 atm and 0.75 atm respectively, what is the equilbrium constants
Determine What is the percent by mass of sodium phosphate in a 0.142M Na 3 PO 4 (aq) solution? If it is given that it has a density =1.015g/mol.
What mass of Aluminum is produced when 0.5 mole of Al2S3 is completely reduced with excess H2?
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