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what is the pH of an aqueous solution prepared by dissolving 0370 moles of formic acid (HCO2H) and .230 moles of sodium formate (NaCO2H) in 1.00L of water?
A truck is initially 6.0km north of the gas station and is moving with a constant speed of 45km/h due south. How far are the vehicles from the gas station when they pass each other
Calculate the formal concentrartion of a sodium acetate solution prepared by diluting 45.0 mL of a solution containing 25.0 ppm sodium acetate
Complete the two half reactions for the Pt electrode. Write two correct Nernst equations for the cell voltage.
What is the pH of a 2.025 M solution of the weak acid H3A? [Note: H3A has K1=3.429x10-6, K2=2.914x10-10, and K3=6.738x10-12
Determine the specific heat of a material if a 38 g sample of the material absorbs 40. J as it is heated from 298 K to 313 K?
What mass of ethanol, CH3CH2OH, should be dissolved in 450. g of water to obtain a freezing point of 4.5°C?
Based on the data for step 2 of the experiment, predict what would happen if you performed step 3 of the experiment (how many sets of three drops of each of the HCl and NaOH would be needed until the buffering capacity is lost for the two solution..
When combining atomic orbitals to form hybrid orbitals, how many hybrid orbitals are formed
The proper concentration for an intravenous NaCl solution is 0.90 g NaCl per 100 mL of water (sometimes refered to as 0.90% m/v).
For such systems, it is often observed that the ratio of the vapor pressures of the pure species is nearly constant over a considerable temperature range. Let this ratio be r, and determine the range of values of A, expressed as a function of r, f..
how do you find the empirical formula of a compound if they don't give you percentages. For example, if they ask: what is the empirical formula for N2O4?
Calculate the weight of potassium chlorate required to prepare 380 mL of wet oxygen collected over water at 20 Celcius and 750 mm of Hg.
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