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How much heat is required to warm 1.3kg of sand from 30 degree Celsius to 100 degree Celsius? (According to my notes- specific heat capacity of sand is .84 J/(g x Celsius)
An average human DNA molecule has 5 X 10^8 binucleotides (rungs on the DNA ladder) of four different kinds. If each rung were a random choice of one of these four possibilities, what would the residual entropy associated with this typical DNA mole..
A solution of acid is titrated with NaOH. Give the net ionic equation for this reaction. 2. Determine the pH for the following solutions, and identify them as acidic, basic, or neutral.
write out the balanced net ionic equation for the reaction of hydrochloric acid
Cars were timed by police radar as they passed in both directions below a bridge. Their velocities (kilometres per hour, numbers of cars in parentheses) to the east and west were as follows
What is the molar ratio of initiator to sulfuryl chloride in the procedure? Why is so little initiator needed relative to the amount of chlorinating agent used
Calculate the concentration of all ions present in each of the following solutions of strong electrolytes.(a) 0.0214 mol of sodium phosphate in 10.5 mL of solutionchemical concentration Mcation concentration Manion concentration
What is the value of Î"Go in kJ at 25 oC for the reaction between the pair: I2(s) and Br-(aq) Use the reduction potentials for I2(s)
A substance has a molecular mass of 100g/mol. How many ug are in a 700mm3 volume of a 2mM solution?
Proceeds at a certain temperature until the partial pressure of H2O, H2, and O2 reach 0.0500 atm, 0.00200 atm, and 0.00800 atm respectively. What is the value of the equilibrium constant at this teperature?
For each of the following pairs of ions, determine whether a precipitate would form when solutions containing these ions are mixed and write the formulas of any precipitates that should form. Indicate the color of any precipitate that should form.
Why are active firefighters likely to experience the adverse health effects from inhaling 300 ppm of carbon monoxide faster than nonactive off-duty firefighters
Find for the combustion of naphthalene. The heat capacity of the calorimeter, determined in separate experiment, is.
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