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A student stopped her oxalic acid titration the instant she saw a faint pink color in the solution. But she failed to swirl the solution properly, so she didn't realize that the pink color would have disappeared. Will her reported molarity of concentrated oxalic acid be too large? too small? Unaffected?
Which reactant is in excess from the reaction of 35.0 g of hydrogen with 276 g of oxygen to form water
A 100.0 mL aliquot of 0.100 M weak base B (pKb = 5.000) was titrated with 1.00 M HClO4. Find the pH after 1.3 mL of acid is added. Then Find the pH after 11.1 mL of acid is added.
After emptying the water and drying the flask, it was filled with ethylene glycol. it now weighed 338.72 grams. what is the specific gravity of the ethylene glycol?
Thermodynamics offers a way to interpret everyday occurrences. If you live in northern climates, one common experience is that during early winter, snow falls but then melts when it hits the ground. Both the formation and the melting happen sponta..
If the cylinder is full of air at 72 C and 0.980 atm, how many moles of O2 are present. (The mole fraction of O2 in dry air is 0.2095.)
Explain the pH of a solution made by adding 8.80 grams of ammonium chloride to 450mL of 0.105M sodium hydroxide. No change in volume takes place
Quantitative relationship between entropy and number of microstatesQuantitative relationship between entropy and number of microstates
Calculate how many moles of sodium phosphate are needed to react completely with 4.6 mol of calcium nitrate( Ca(NO 3 ) 2 ) to form sodium nitrate (NaNO 3 ) and calcium phosphate?
the same student mixed the crystalline product with ethanolic 1% FeCl3 solution and obtained a colored solution. briefly explain what might have caused this result.
Consider a sample of 3.5g of water, which has an equilibrium vapor pressure of 23.8 mmHg at 25.0 degC. If this sample is placed into a 6.00L flask, what mss of liquid water will remain when equilibrium is established
Write balanced (a) molecular, (b) overall ionic, and (c) net ionic equations for the reaction between an aqueous solution of phosphoric acid, H3PO4(aq), and an aqueous solution of sodium hydroxide. The products are sodium phosphate and water.
How many grams of CO are needed to react with an excess of Fe2O3 to produce 558 g Fe? The equation for the reaction is: Fe2O3(s) + 2 CO(g) → 3 CO2(g) + 2 Fe(s)
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