What was the mass of the aluminum
A piece of Al(s) at 94°C is placed in 65g of H2O at 28°C. The Aluminum cools and after equilibrium the final temperature of Aluminum and water is 38°C. What was the mass of the aluminum?
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What is the density in g/mL of a sphere with a diameter of 4cm and a mass of 1.35 grams? What is the percent error if the actual density of the sphere was 7.87 g/mL?
If an analytical method has been developed and the retention time for a particular anabolic steroid has been determined, how might you use this method to determine the possibility of the use of anabolic steroids by an athlete.
At 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa/s when 10.0 % had reacted and 7.67 Pa/s when 20.0 % had reacted.Determine the order of reaction.
Gluconeogenesis shares some, but not all enzymes, with the glycolytic pathway. It would appear to be more efficient if both pathways used all of the same enzymes since the pathways are essentially the reverses of each other. Why don't both pathwa
The Aluminum cools and after equilibrium the final temperature of Aluminum and water is 38°C. What was the mass of the aluminum?
Lucy has $900,000 to invest and she wants a portfolio beta of 1.2. The S&P 500 has an expected return of 18% and the standard deviation is 30%. The risk-free return is 5%. She plans to put her money in the S&P 500 and T-bills. What is the
A hydrogen-filled balloon was ignited and 1.50 gram of hydrogen reacted with 12.0 g of oxygen. How many grams of water vapor were formed?
A ball of aluminum [c = 0.897 J/g°C] has a mass of 100 grams and is initially at a temperature of 150°C. This ball is quickly inserted into an insulated cup containing 120 ml of water at a temperature of 15.0°C.
The atmospheric pressure is 738 mmhg. The temperature of the water and that of the gas are identical at 26oC. how many moles of helium have been evolved.
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Medical advances in the care of premature infants now allow babies who are born extremely premature (as early as 24 weeks gestation) to survive.
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