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Murexide end point in 25.00 mL aliquot which was not treated with ascorbic acid. Find amounts of copper and nickel in ppt (mass/vol.) were in original solution?
Write the difference between geometric arrangement of electron pairs and geometric arrangement of atoms?
Use masses to two decimal places found on chart in the front of the text. Round your answer to one decimal place, do not include units.
Find the pH of the waste water following addition of 200 kg of NaOH? What will be pH of waste water if technician adds 10.0 kg of NaOH in excess to what is needed to bring the pH to 7.2?
Consider 4.90L of a gas at 365 mmHg and 20. ° C . If container is compressed to 3.00L and temperature is increased to 40. ° C , find the new pres
Boiling point of water decreases 0.05°C for every 1 mmHg drop in atmospheric pressure. Find boiling point of water at elevation of 7000ft ?
Once rubber band is in motion it shows kinetic energy. A parked car, child playing with yo-yo and a calculator exhibit which kind of energy?
Find the total mass of water raised 56.7 m during this 142.0 minute period? Determine the efficiency of the process?
Can you describe Hess's law? How does quantum mechanical model of atom describe difference between macroscopic world and microscopic world?
Determine the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Illustrate your solution.
Explain how the limestone objects are corroded by sulfuric acid in polluted air. What chemical reaction is involved here?
A synthesis reaction to form magnesium oxide. Write and balance equation. Compute maxium amount in grams of product that can be formed.
Compute pCu+ for titration of 10.00 mL of 0.05000 M of Cl- with 0.02500 M Cu+ standard solution when 4.500 mL, 20.00 mL and 21.40 mL of titrant have been added.
Plot titration curve for same titration if concentration of titrant is increased to 0.0500 M. What effect does this have on shape of titration curve?
Excess AgNO3 was then titrated using 4.06 mL of 0.0625 M KSCN. What was % P2O5 in original plant food sample?
Draw Lewis structure and find out molecular geometry of given compounds which may fit into active site of this enzyme.
You require to find out which elements will most probable combine with oxygen to produce oxides which are present in the sample.
Write down the balanced molecular equation of reaction performed. Write physical state of each species (aq, l, g, or s) .
How many grams of Ca3(PO4)2are produced when 450.0 g NaCl are formed in reaction? How many grams of Na3PO4 should be given to reaction to form 800.0 g Ca3(PO4)2.
The sample of material in container is analyzed, and it is found to contain exactly 0.67 moles of sodium atoms. How many moles of oxygen atoms are in sample?
Acetylene gas (C2H2) is produced by adding water to calcium carbide (CaC2). Find out how many grams of CaC2 are required to react completely with 1.92 g of H2O.
Reaction therefore reverses as soon as light is removed.If 310 kJ/mol of energy is needed to make reaction proceed, what wavelength of light is essential?
Find the percent by mass of sulfur trioxide (SO3) if oleum is expressed as. Explain at least three potentially hazardous features related with concentrated sulfuric acid.
How much heat is exchanged when 14.3 kg of iron (Fe) rusts? Compute standard change in enthalpy, ΔH°rxn, for decomposition of calcium carbonate to calcium oxide.
Find the amount of heat (kJ) required if 64.0 kg of H2O is heated from 25°C to 85°C? 200.0 g Al (C = 0.900 ) at 95°C is added to 85.4 g H2O at 25°C.