Find the fraction of methane in the original mixture
A mixture of CH4 (methane) and C2H6 (ethane) weighs 68.00 grams and it is burned in with oxygen fuel. The products formed in this reaction are H2O and CO2 and these products weigh 13.00 grams. Find the fraction of methane in the original mixture.
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A metal object with a mass of 32 g is heated to 99°C, and then transferred to a calorimeter containing 75 g of water at 18°C. The water and metal object reach a final temperature of 24°C. What is the specific heat of this metal object?
When the ball lands, it is at the same level as the tee. (a) On the distant planet, what is the maximum height of the ball? (b) On the distant planet, what is the range of the ball?
The distribution ages for students at the state college is positively skewed with a mean of 21.5 and a standard deviation of 3.
Assuming that the mechanism has only one step, and that the products are 47 kJ lower in energy than the reactants, sketch approximate energy-level diagrams for the catalyzed and uncatalyzed reactions.
A river of width 31 m flows in a straight line (the x direction) with a speed of 0.21 m/s. A boat is rowed such that it travels directly across the river (along y). If the boat takes exactly 3.0 minutes to cross the river, what is the speed of the
A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.180 g of this subunit was dissolved in enough water to produce 2.00 \rm mL of solution.
You carry 7.0 kg bag of groceries 1.2m above ground at constant velocity across a 2.3 m room. How much work do you do on bag in process?
A 0.5 kg dart is fired vertically from a spring gun that has spring constant of 4000 N/m Prior to release the spring was compressed by 10.7 cm. When dart is 2 m above the gun its upward speed is 7 m/s. Determine maximum height reached by dart.
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