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A sample of gas contains four gases (He, Ne, Ar, and Xe) with the following partial pressures: He (43 mm Hg), Ar (835 mm Hg), and Xe (111 mm Hg). If the total pressure in the container is 1355 mm Hg, what is the partial pressure of Ne in the sample?
Copper metal reacts with hot concentrated sulfuric acid solution to form aqueous copper (II) sulfate, sulfur dioxide gas, and water. Write the balanced chemical formula.
a compound x contains the elements carbon hydrogen and oxygen. after 35 g of x were burned in pure oxygen 59 g of
at the temperature of twenty five degree celsiusnbsp when 1.00 g of sulfur is burned at constant pressure in an
A gaseous mixture of O2 and N2 contains 30.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 505mmHg ?
sodium reacts with hydrogen gas. how many grams of sodium are needed to react with 2.50 l of hydrogen measured at stp?
If only COF2 is present initially at a concentration of 2.00 M , what concentration of COF2 remains at equilibrium? Express the molar expression numerically
Determine the standard enthalpy change of the following explosive reaction by using the apprpriate enthalpies of formation
How many grams of sodium phosphate Na3PO4(163.9 g/mol) are contained in 205. mL of a sodium phosphate solution that is 0.194 M in sodium ion Na+?
After you determine the concentration of the unknown stock solution, you will need to use the density to calculate the % mass of thymol
A cobalt compound has an observed magnetic moment of 5.2 B.M. What can you deduce about the compound?
Consider a solution formed by mixing 48.0 mL of 0.100 M H2SO4, 36.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 2 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
when 50.0 g of Copper are reacted with silver nitrate solution Cu + 2AgNo3 - Cu(No3)2 +2 Ag 148 g of silver are obtained. what is the percent yeild of silver obtained?
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