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Problem- How much heat (in kj) is required to warm 10.0 g of ice, initially at -10.0 degrees Celsius to steam at 110.0 degrees Celsius? The heat capacity of ice is 2.09 J/g Celsius and of steam is 2.01 J/g Celsius
Please answer only if you are 100% confident
When the solvent is removed from a sample solution, 3.0 mole of substance B, 7.5 moles of substance C, and 15.0 moles of substance A are left in the solution. What is the mole fraction of substance A in this new solution?
A balloon is inflated from 0.0100 L to 0.500 L against an external pressure of 10.00 atm. How much work is done in joules? 101.3 J = 1 L x atm
What is the mass of the product after the reaction between 250 mg of trans-cinnamic acid and 0.6 g of pyridinium bromide perbromide with 5% of impurities in 6 mL of acetic acid. Yield is 90%
1. you are playing with a helium balloon on a typically nice fall day in fullerton ca. suddenly the celsius temperature
Beginning with the absorbance of your unknown brass sample show computation for a) Cu+(2) (aq) concentration; b) mass of Cu in brass; c) percent Cu in brass, d) the average percent Cu in brass.
You work for a local chemical company. In your capacity as a chemist at this company, you developed a novel catalyst for the reaction with delta G = -10.5 kJ/mol at 50 degrees celcius For the uncatalyzed reaction at 50°C, the kf (the forward rate ..
What is the molality if a solution in which 15 g of I2 is dissolved in 500. g of alcohol?
The structure of olivine [M2SiO4(whare M=Mg,Fe)] can be viewed as a ccp arrangment of oxide ions with Si(IV) in tetrahedral goles and the metal ions in octahedral holes
Problem- The endpoint of your titration occurs after you add 13.26mL of 0.5643 M NaOH. The linear regression line for your pH vs. NaOH graph is Y=0.13x+4.16. What is the pKa of your acid
Compute the concentration of Zn2+ in a solution prepared by mixing equal volumes of 5.0x103 M Zn(NO3)2 and 0.10 M NaCN. Ignore the hydrolysis of CN(aq).
What is the age of a rock whose 40Ar /40Kratio is 1.25? The half-life of 40 K is 1.28 times 10^9years Formulas ln(N)t/(N)o =-k+ + 1/2 =0.693 /k
Outline a complete mechanistic sequence for the reaction of 2-bromobutane with potasium2-methyl-2-propoxide in 2-methyl-2-propanol solvent to form thethree alkenes generated in the reaction
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