How many moles of rust can be formed
Iron reacts with oxygen in the air to produce rust, Fe2O3, according to the reaction shown below. 4 Fe + 3 O2 → 2 Fe2O3 How many moles of rust can be formed if 1.8 moles of iron are present?
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Data from this study came from the "National Women's Study-Replication." The sample of 3,001 women was formed from two U.S. population samples: a national cross-section of 2,001 women aged 18-34 years plus a national cross-section of 1,000 wom
The driver of an 2000 kg car traveling at 20.0 m/s slams on the brakes, locking the wheels on the dry pavement. The coefficient of kinetic friction between rubber and dry concrete is typically 0.650. a) Use the work-energy theorem to calculate how
Having landed on a newly discovered planet, an astronaut sets up a simple pendulum of length 1.17 m and finds that it makes 577 complete oscillations in 1590 s. The amplitude of the oscillations is very small compared to the pendulum's length. Wha
Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a =2.300 L^2 x atm/mol ^2 and b=0.0430 L/mol.
A 250 gram sample of a metal is warmed from 60 °C to 85 °C when 1000 cal are added. What is the specific heat constant for the metal?
Louis Lataif posted an article on Forbes.com February 1, 2011, titled "Universities on the brink". The cost of education has increased 439% over the past 30 years, versus inflation at 106% and health care at 251%. Total student indebtedness is
A reaction at 2.35 atm produces 18.4 L of a gas and evolves 84.1 kJ of heat (exothermic). Calculate the change in internal energy of the system (in kJ)
You have heard that a competitor has a new product feature that will make a big difference in sales. The competitor will demonstrate the feature in a private dealer meeting at the annual trade show.
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In her campaign for Alaska governor, Sarah Palin promoted abstinence-based sex education and opposed "explicit sex education."
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