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When 23.6 g of clacium chloride were dissolved in 300 ml of water in a calimeter the temperature rose from 25.0 C to 38.0 C . What is the heat energy change for this in kcal. Specific heat of h2o 1.00cal/gC. How many mols of cacl2 is this. How much heat energy per mol. answer in kilocalories
Using the value of Ka from your titration curve, calculate that pH at the equivalence point?
a volume 505 mL of air on a cold winter day at -15 degrees celcius is breathed into the lungs, where body temperature is 37 degrees celcius
nitrogen gas was collected over water at a temperature of 40 degrees C, and the pressure of the sample was measured at .796 mmHg. if the vapor pressure of water at 40 degrees C is 55 mmHg, what is the partial pressure of the nitrogen gas?
When there are branches in either the acid or the alcohol, how do you name the ester formed from the reaction of these two? For example,
What is the heat change of a 25 g block of iron that starts at a temperature of 22 degrees C and increases to 79 degrees C?
discuss how the shielding by core electrons is analogous to putting a frosted-glass lampshade between the lightbulb and your eyes.
Find the name of hazardous chemicals and write formula and how will handle these hazardeous chemical in the lab from below ammonia, bleach, dish detergent, hand sanitizer, hand soap, lemon juice, shampoo, codium bicarbonate, vinegar, sodium hydrox..
Use the Heisenberg uncertainty principle to calculate the uncertainty (in meters) in the position of a honeybee weighing 0.65g and traveling at a velocity of 0.90m/s
How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF3. WHY
Draw the structures of all monobromo derivatives of hexane, C6H13Br, which contain a 6-carbon chain.
Calculate the number of moles of solute present in 50.0mg of aqueous solution that is 1.25 molality NaCl.
A filtration could be very time consuming if it were not aided by a gentle suction which is developed by:
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