What is the concentration of the acid
In a particular titration experiment a 25.0 mL sample of an unknown monoprotic acid required 30.0 mL of .200 M NaOH for the end point to be reached. What is the concentration of the acid?
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A gas sample containing 1.35 mol at 25°C exerts a pressure of 405 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the con
How much heat (kJ) is required to change 8.13 g of ice at its normal freezing point to steam at 100oC? The specific heat of water is 4.184 J/(g · oC), the molar heat of fusion at 0oC is 6.01 kJ/mol, and the molar heat of vaporazation at 100
how many moles of oxygen are consumed each time 0.500 mole of P2O5 is formed?
Magnesium has three isotopes, Mg-24, Mg-25, and Mg-26. The percentage abundance of each in order is 78.70%, 10.13%, 11.17%. Calculate the relative atomic mass of Magnesium.
A 309 mL sample of unknown HCl solution reacts completely with Na_2CO_3 to form 10.1 g CO_2. What was the concentration of the HCl solution?
What is the freezing point of a solution of 1.17 g of 1-naphthol, C10H8O, dissolved in 2.00 mL of benzene at 20°C? The density of benzene at 20°C is 0.876 g/mL. Kf for benzene is 5.12°C/m, and benzene's normal freezing point is 5.53&de
A graduated cylinder contains 133 of water. A 10.0 piece of iron (density = 7.86 ) and a 16.0 piece of lead are added. What is the new water level in the cylinder?
What is the lewis structure for xenon tetrabromide?
what is the volume of the bubble when it reaches the ocean surface where the pressure is 1.00 atm and the temperature is 18 C?
Write the net ionic equations for the precipitation reaction or reactions that occur. What are the spectator ions in the solution?
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