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Gold can be hammered into extremely thin sheets called gold leaf. If a 1.00-g piece of gold (density= 19.32 g/cm3) is hammered into a sheet measuring 8.0 x 5.0 ft, what is the average thickness of the sheet in meters?
in order to make a standard solution of ethylene diaminetetraacetic acid pure disodium edta dihydrate can be used as a
It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). A 46.06 gram sample of a hydrate of MnSO4
In an exothermic reaction, which rate increases more when the temperature is raised, the forward or reverse reaction
A buffer is prepared by mixing 161 mL of 0.193 M NaOH with 695 mL of 0.687 M sodium bicarbonate (NaHCO3). Given that the Ka1 of H2CO3 is 4.5 x 10-7 and the Ka2 is 4.7 x 10-11, calculate the pH of the solution.
Calculate the pH of the resultant solution of mixing together two solutions of 2 L of 1.0 M acetic acid
The methane (CH4) gas in a 10.00L container at 305oC and 101 kPa pressure was burned in excess oxygen. What is the mass of carbon dioxide added to the atmosphere from this combustion. and what volume would be occupied by this CO2(g) at this temper..
Mg + 2HCl --> MgCl2 + H2 For a mass of 0.013 g Mg and 5.0 mL of 1.00 M HCl, calculate the partial pressure of the resulting H2(g) in a flask with V = 140.612 mL at 23.5?C.
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
A solid mixture consists of 34.0g of KNO3 and 6.0g of K2SO4. The mixture is added to 130.0g of water. (this problem includes a solubility curve for other answers).
Draw the products(if any) expected from the treatment of each of the following compounds with ozone followed by aqueous hydrogen peroxide
Write a balanced nuclear reaction for the production of dubnium-260 and neutron(s) by bombardment of californium-249 with high-energy
Calculate the concentrations of the protonated and unprotonated forms of bromothymol blue in 100 mL of a pH 8.1 buffer solution to which 1.0 mL of a 0.005 M solution of bromothymol blue
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