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How would the following experimental errors change the calculation of the number of mg of ascorbic acid in fresh orange juice?
a) student neglected to filter the juice
b) the DCP was standarized properly but it was done the previous day
c) the studnet neglected to added the pH 3 buffer
d) the student neglected to add the metaphosphoric acid
How many moles of BCl3 are needed to produce 25.0 g of HCl(aq) in the following reaction?
The density of mercury (Hg, a liquid metal) is 13.6 g/mL. What volume would 305.4 grams of mercury occupy
First ,2-chlorotoluene react with acetylchloride. then acylation product (an oil ) react with its corresponding carboxylic acid(aluminum(3) chloride)
How much heat (in kJ ) is required to warm 13.0 of ice, initially at -13.0, to steam at 114.0? The heat capacity of ice is 2.09 and that of steam is 2.01
If the heat capacity of the calorimeter itself (not including the internal water) is 20.4 J/°C and the final temperature of the calorimeter and water bath is 23.3 °C, what is the enthalpy of combustion of the new compound?
When atomic absorption spectrophotometer had been allowed to adequately equilibrate, a blank determination of absorbance gave the following results.
What is the pH of the resulting hydrochloric acid solution and 0.40 g of hydrogen chloride (HCl)is dissolved in water to make 6.0L of solution
SLIGHTLY LESS than 100 degrees Celsius, but the final boiling point was AT 100 degrees Celsius. Why should the boiling point rise as the distillation progresses?
What volume (in milliliters) of 0.250 M NaOH should be added to a 0.120 L solution of 0.023 M glycine hydrochloride
460. mL of hydrochloric acid (HCl) acid is exactly neutralized with 485 mL 0.660 M NaOH solution. What is the concentration of the acid solution.
White phosphorus is a molecular solid made of molecules of P4. A 3.05 g sample of white phosphorus starts at 20oC. Calculate the amount of heat (in J) required to melt the sample.
Determine whether each of the phrases or examples describes a thioester, reduced cofactor, or phosphorylated compound:
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