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A student titrates 25.0 mL of HCl using a standard solution of 0.250 M NaOH. What is the molarity of the HCl solution is it takes 35.0 mL of NaOH to reach the titration endpoint? What is the mass of HCl in the sample used?
one mole of a monatomic ideal gas is held at a constant temperature of 300k while the volume is changed reversibly form
How many mols of hydrogen are produced from the reaction of .558 mols of zinc with an excess of hydrochloric acid?
calculate the molarity of acetic acid in a vinegar sample knowing that 5.00 ml of vinegar requires 43.50 ml of 0.105 m
Calculate the molar mass of the unknown gas. (remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0L
The isentropic efficiency of the turbine is 85%. The air is then delivered to the aircraft cabin and leaves the aircraft at 160 C. Calculate. i. The refrigerating effect
at 340 k kp 69 for the reaction h2g i2g-gt 2hig. 50.0 g of hi is injected into an evacuated 5.00-l rigid cylinder at
The mass percent of an element in a compound is the mass of the element (total mass of the element's atoms in the compound) divided by the mass of the compound
A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank.
question how many stereoisomers are possible for ch2cl2 provided that the central carbon has a square planar
Balance each of the following equations. Classify each reaction as combination, decomposition, single-displacement, or double-displacement.
Calculate the standard enthalpy of the reaction for the oxygenation of deoxyribose to ribose
Calculate the number of moles of solute present in 50.0mg of aqueous solution that is 1.25 molality NaCl.
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