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What does assessment look like in the science classroom and why is it important?
If 37.4 grams of water decomposes at 297 Kelvin and 1.30 atmospheres, how many liters of oxygen gas can be produced? 2 H2O (l) yields 2 H2 (g) + O2 (g)
The enthalpy of vaporization of water at 373 K and 1 bar is 40.7 kJ/mol and the molar heat capacities are 75.3 J/(mol K) for liquid and 33.6 J/(mol K) for gaseous water. Find the enthalpy of vaporization of water at 273 K and 1 bar.
How do I determine the concentration of 2 separate acids in a solution of water if I know the overall pH of the solution? There exists both formic acid and acetic acid in a 1 liter solution of water. The overall solution pH is stated as 4.0 and it ..
write the chemical equation for the reaction that occurs when you add NaOH solution to a CH3CO2H/NaCH3CO2 buffer solution
Ar is a solid below -189 oC with a face-centered cubic array of atoms and a supposed density of 2.29 g/cm3. Assuming that the atoms are spheres in contact along the face diagonal, what is the radius of a Ar atom
calculate the Henry's law constant for oxgen solubility in freshwater undr these conditions
What is the vapor pressure, at 28 degrees C, of a solution made by mixing 80.0 g of C3H7SH and 120.0 g of CH3CN, if Raoult's Law is obeyed
When 0.154g of sulfur is finely ground and melted with 4.38g of camphor, the freezing point of the camphor is lowered by 5.47 degrees Celsius. What is the molecular weight of sulfur and What is its molecular formula
Is the wave behavior of light adequate to explain all phenomena? Give three examples of cases
Question- Show why a buffered solution does not change its pH significantly when small amounts of bases or acids are added, using the following solutions of A)0.1 M HCl B) ).1M NaCH3COO and 0.1 M CH3COOH. Calculate the pH of the solutions before a..
Calculate this speed in yards per second. How many yards would Arie have traveled during the time it takes the average human to blink (350 milliseconds)
Starting with 2 different samples of propyne, show how you can make 2-methyl-pent-3-yn-2-ol (condensed formula (CH3)2C(OH)C=CCH3 ). In other words, you can convert propyne into a nucleophile, and convert propyne into an electrophile, and react the..
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