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A sample of lead at an initial temperature of 22.5 ºC absorbs 2.25 x 104 kJ of heat. The sample's temperature increases to 30.5 ºC. Calculate the mass in grams of lead in this sample. The specific heat constant for lead is 0.128 J/g-ºC.
A system consists of 6.00 moles of benzene. It is initially at a temperature of 76.0°C, a pressure of 0.878 bar, and a volume of 534.7 cm3. Calculate the volume of the system at the end of this process.
During a race, a runner runs at a speed of 6 m/s. 2 seconds later, she is running at a speed of 10 m/s. What is the runner's acceleration?
The pKa of aspirin (acetyl salicylic acid) is about 3 while the pH of stomach acid is about 1.0 Circle the approximate proportion of ionized (deprotonated and charged for acid) to unionized (protonated and uncharged for acid) aspirin that would oc..
Problem- Calculate the pH at the equivalence point in titrating 0.100M solutions of each of the following with 9.0x10-2. M NaOH.
Use the knowledge you have acquire in this course to discuss the economic impact that the Covid-19 had on the economy. You should use graphs, and terms
Draw the structure of aspiring and assign each different type of proton(s) a letter. Then assign the letters to their corresponding peak in the NMR spectrum
a briefly review the logic that turns the observation that the absolute zero of temperature is unattainable into the
Is the CV characteristic obtained at high frequency or low frequency? Or. is it impossible to determine? Explain.
Suppose that a sample of gas occupies 162 mL of volume at 25C and a pressure of 291 torr. What would be the volume if the pressure were changed to 503 torr at 25C? Answer in units of mL.
What chemical features and properties of detergents make them better than soap for hard water application?
Calculate the standard emf of this voltaic cell. Will the concentration of Ni2+(aq) increase or decrease as the cell operates?
Specified the balanced equation, Na2SO4(aq) + BaCl2(aq) 2 NaCl(aq) + BaSO4(s), Explain how many moles of Na2SO4 are required to produce 0.45 g of BaSO4
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