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Which acid is present in lemon ?
The iron in .6656 gram ore sample was reduced quantitatively to the +2 oxidation state and then titrated with 26.753g of .02966M KMnO4 soluton. what is the percent Fe2O3 in the sample
A news station in your local area has predicted a severe winter storm on the way and they want to make sure the streets don't freeze over. Which solution should they use to put on the streets to lower the freezing point, MgCl2 or NaCl, and explain..
Calculate the change in entropy of a system (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
A cell has an aluminum electrode and a zinc electrode in aluminum nitrate solution and zinc nitrate solution, respectively. The cell potential is +0.92 V and zinc is the cathode. Which is the oxidation electrode and which is the reduction electrod..
Determine the zodiac sign for the date entered. Keep asking until the user enters zero for the month. For your convenience, you only need to process three: Aries March 21 - April 19 Taurus April 20 - May 20 Gemini May 21 - June 20 YOU MUST write a fu..
A 1.30 g sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 715 mmHg.
If the extracellular [Na+] is0.13 M and the solubility in water of sodium u rate is 0.069 g/100mL, Explain what is the minimum u rate ion concentration (abbreviated [Ur-]) that will cause a deposit of sodium u rate
a sample of neon is collected by displacing 182 ml of water. the pressures of the gas and the atmosphere are equalized
write the balanced net ionic equation for the reaction that occurs when 0.1 m solutions of copperii sulfate and calcium
Problem- In what form(s) will a carboxylic acid, RCOOH, be present if the pH of an aqueous solution is adjusted to be the same as the pKa of the acid
Describe how you prepare 5.00 times 10^2 mL of 0.7 M CuSO4. How many grams of CuSO4 are needed. How many significant figures are used for the mass. What type of container should it be made up in.
if the reaction fe2n s 32 h2 g -gt lt- 2fes nh3g comes to equilibrium at a total pressure of 1 atm analysis of the
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