Explain the difference in pressure between methane
15.0 moles of gas are in a 8.00 tank at 20.2. 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* atm/mol^2 and b=0.0430 L/mol.
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A quantity of 0.20 mole of carbon dioxide was heated to acertain temperature with an excess of graphite in a close container until the following equilibrium was reached.
Estimate the largest possible force (in N) that can be applied before the bar breaks. Assume the maximum flexural strength reported for this material.
A chemist prepared a 0.244 M solution of fructose at250C. At equilibrium it was found that its concentration had decreased to 0.163 M. Calculate the equilibrium constant for the reaction.
An electron (mass m = 9.11 multiplied by 10-31 kg) is accelerated in the uniform field E (E = 1.90 multiplied by 104 N/C) between two parallel charged plates. The separation of the plates is 1.30 cm.
A block of wood (M block = 5.2 kg) rests on a horizonal surface for which the coefficient of kinetic friction is 0.28. A bullet (m bullet = 32 g) is shot along the horizontal direction and embeds in the block, displacing it 87 cm. What was the ini
The pressure leaving the compressor is 90 psia. The maximum temperature in the cycle is 2000 degrees rankin. Determine p,v,t at each point in the cycle and the thermal efficiency of the cycle.
An object is 17 cm in front of a diverging lens that has a focal length of -11 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 1.5?
The mean diastolic blood pressure of 100 individuals is 73 mmHg with a standard deviation (s) of 11.6 mmHg. Calculate the 99% confidence interval for the µ.
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Risky social support Another way in which the Internet can increase children's and adolescents' mental health problems is by fostering communication
When developing a grant proposal, it's important to set clear and measurable goals. One way to do this is by making sure your goals follow the SMARTIE system
Although the Internet can be a helpful outlet for some youth in terms of exploring their sexual identify (e.g., LBGT youth who live in small, conservative commu
Cyberbullying An additional risk of Internet communication is cyberbullying, which is when someone engages in behavior to hurt someone
Respond to at least two of your colleagues (one assigned to each of the other two disorders) on two different days and compare your assigned disorder
Its key advantage is high internal validity; its disadvantage is that randomization is often ethically or practically impossible.
Reflect: Briefly describe a personal belief or opinion you hold (e.g., a stance on a political issue, a preference for a certain type of media).