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If you dilute 25.0 mL of 1.50 M hydrochloric acid to 500 mL, what is the molar concentration of the dilute acid?
The products were collected and had the following masses: CO2: 1.707 g N2: 0.136 g H2O: 0.7859 g For this compound (CaHbOcNd) what are the integers a,b,c and d in the empirical formula
The partial pressure of O2 in air at sea level is 0.21 atm. The solubility of O2 is 1.38E-3 at 1 atm. Use Henry's law to calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20°C and an atmospheric ..
6-An element M reacts with chlorine to form MCL2 and with oxigen to form MO2 and with nitrogen to form the most likely candidate for the element is (a) LI (b) Mg (c) Al (d) SI 7- which species does not have an octet of electron for its outer core
find the percentage composition of a compound that contains 1.94 g of carbon 0.48 g of hydrogen and 2.58 g of sulfur in
For a solution containing 0.0060 M calcium nitrate and 0.057 M nitric acid, calculate the activity of the calcium ion.
Suppose that the atomic mass unit (amu) had been defined as one-sixth of the average mass of an atom of fluorine instead of one-twelfth of the mass of an atom of carbon-12.
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.80 g of sodium carbonate is mixed with one containing 5.43 of silver nitrate.
If 125 cal of heat is applied to a 60.0 g piece of copper at 25.0 C, what will the final temperature be? The specific heat of copper is 0.0920 cal/(g.C}) .
A cylinder fitted with a piston contains 3.00 moles of He gas (ideal!) at P = 1 bar and is held in a large constant-temperature bath at 400 K. The pressure is reversibly increased to 5.00 bar.
an aerosol can has a gas pressure of 144 kpa at 293 k. calculate the pressure when the can is heated to 425
what will the concentration be after 3.00 minutes? B)A zero-order reaction has a constant rate of 3.40×10^?4 M/s . If after 80.0 seconds the concentration has dropped to 3.00×10^?2 M , what was the initial concentration?
Write a balanced chemical equation for the neutralization reaction upon which this titration is based, and indicate clearly which atom is being protonated.
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