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While 0.56 g of Na(s) reacts with excess F2(g) to form NaF(s), 13.8 kJ of heat is evolved at standard-state conditions. Define what is the standard enthalpy of formation (H) of NaF(s)?
What volume in liters of 0.94 M KOH solution should be added to a 0.090 L solution containing 9.1 g of glutamic acid hydrochloride
the maximum pressure that can be developed for a certain fluid power cylinder is 15.0 mpa. compute the required
What volume of water, in gallons would be required to fill a 750 mL container? 1 liter = 0.265 gallon Calculate the volume of millimeters for each of the following
What volume in mL of 2.00 M sodium bicarbonate solution is needed to neutralize 25.0 mL of 4.00 M HCl?
The heat required to raise temperature of a large cup of water from room temperature to boiling is approximately 100 kj. What is the quantity of heat in kilocalories and BTU
two moles of he gas are at 23 degrees c and a pressure of 220 kpa. if the gas is heated to 44 degrees c and its
How many grams of LiCO3 do you need to weigh out to dissolve in the 5.0 liters? If you had started with a 5000. ppm solution of Li2CO3 solution, how many mL of it would you need to pipet into the 5.0 liter to achieve the same 425 ppb Li 1 solution..
What is the pH of an acetic acid-potassium acetate buffer if the salt concentration is 40% higher than that of the acid
A 155-g piece of copper at 159oC is dropped into 250.0 g of water at 18.7oC. (The specific heat of copper is 0.385 J/goC.) Calculate the final temperature of the mixture.
automated amino acid analysis of peptides containing either asparagine or glutamine shows ammonia as a product as well
Calculate thePH at the equivalence point in titrating 0.100 M solutions of each of the following with 9.0×10? HCLO2
a gas with a volume of 525 ml at a temperature of -25 celsius isheated to 175. what is the new volume of the gas if
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