nikk

what is the quotient (2.965 x 10 ^7) divided by (5 x 10^3)?

When 5.0g of CaCl2 was dissolved in 50 ml of water in a coffee cup calorimeter, the temperature of the solution rose from 22.3C to 30.5C. What is the qsoultion in J and what is the qrxn in J? What is the deltaH in kJ/mol of CaCl2 dissolved?

Given the following information at 25C, calculate
G at 25 degrees Celsius 2A(g)  B(g) ±£ 3C(g) Substance
Hf  (kJ/mol) S(J/molK) A(g) 191 244 B(g) 70.8 300 C(g) -197 164 a. -956 kJ b. 956 kJ c. 346 kJ d. 346 kJ e. -1.03 * 10^3 kJ

Calculate the standard free energy of the following reactions at 25C, using standard free energies of formation. a. C2H4(g)  3O2(g) ±£ 2CO2(g)  2H2O(l) b. CaCO3(s)  2H(aq) ±£ Ca2(aq)  H2O(l)  CO2(g)

@ms.sue plz help

thank you

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