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An ice cube of mass 8.5 g is added to a cup of coffee, whose temperature is 95 degrees C and which contains 120 g of liquid. Assume the specific heat capacity of the coffee is the same as that of water. The heat of fusion of ice(the heat associated with ice melting) is 6.0 kJ/mol. Find the temperature of the coffee after the ice melts.
Maintenance of pH is vital to the cells of all living organisms because enzyme activity is influenced by pH. What is the intracellular pH range of most cells?
Find the reaction order using a Powell plot or the fractional-life method and also estimate the rate constant
Given the following thermochemical equations, C2H2(g) + 5/2 O2(g) -----> 2CO2(g) + H2O(l) enthalpy = -1299.5 kJ
What is the FORMULA for the limiting reagent? c.What amount of the excess reagent remains after the reaction is complete? IN GRAMS
The enthalpy change for melting ice at 0C and constant atmospheric pressure is 6.01 kJ/mol. Calculate the quantity of energy required to melt a moderately large iceberg with a mass of 1.40 million metric tons.
A 0.500 L solution of 7.50 M hydrochloric acid is used to neutralize a 250.0 g sample of calcium hydroxide. Calcium chloride - a chemical used to control highway dust, strengthen concrete mixes, and add flavor to foods - is produced by the reactio..
A 12 kg block of ice has a temperature of -10.0 degrees celsius. The pressure is one atmosphere. The block absorbs 4.50 times 10 to the sixth power J of heat. What is the final temperature of the liquid water?
an antacid, contains CaCO3. If Tums is added to 20.0mL of 0.400 M HCl solution, how many grams of CO2 gas are produced?
Determine the molar mass of chloroform gas if a sample weighing .389 grams is collected in a flask with a volume of 102cm cubed at 97 degrees Celsius. The pressure of the chloroform is 728 mmHg.
Bromine addition to trans-cinnamic acid, During bromine addition to trans-cinnamic acid, why is it necessary to maintain excess bromine in the reaction mixture
Determine the mass of sodium phosphate that yields 1.00 g of calcium phosphate precipitate.
Describe the preparation of 1.5 liters of a 0.1 M acetate buffer, pH 5.0, starting from solid sodium acetate trihydrate
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