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1. What determines the speed of a travelling wave? What happens when a wave collides with another wave? What happens when a wave hits a barrier?
2. An earthquake occurs underwater off the coast of Oregon, producing both a wave that travels through the rocks of Earth's crust and a tsunami that travels in the ocean water. Which of these waves will reach the Oregon coast first?
How many centimeters does light travel in 5.00 years (given that the velocity of light is 3.00 \times 10^{10} {\rm cm}/{\rm s})? Express your answer with the appropriate units.
Write the full equation (including reactants adn products) showing formation of the triacyglycerol from the glycerol molecule and the following fatty acids: 1 molecule of palmitic acid, 1 molecule of stearic acid, and 1 omega-6 polyunsaturated fat..
Calculate the molar concentration of NaNO3 and the mass percent of NaNO3 in the solution. What is the mole fraction of NaNO3 in the solution?
What is the pH of the solution after the addition of 80.0 mL of 0.0500 M NaOH(aq) to the buffer. What is the pH of the solution after the addition of 10.0 mL of 1.0 M HNO3(aq) to the initial buffer
It takes 148.8 calories of heat to raise the temperature of the Helium in the balloon to 33.0°C. What is the specific heat of Helium?
A sample of cadmium with mass 2.248g is dissolved in 3.00M HCl. What volume of HCl is required to dissolve the Cd. (Cd dissolves in HCl to form Cd^2+)
In a solution of acetone and ethanol, the mole fraction of acetone is 0.40. What is the concentration of acetone as a mass percent?
Explain what is the vapor pressure of seawater that has an osmotic pressure of 27.36 atm at T = 30 ° C. Define the pure vapor pressure of water at this
The shielding of electrons gives rise to an effective nuclear charge,Zeff , which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively
calculate the heat absorbed by 15.0 g of water to raise its temperature from 20.0oc to 50.0oc at constant pressure. the
A hydrogen atom with its electron in the n=3 energy level absorbs light with a wavelength of 1879 nm. the final energy level of the electron is
Problem- For each of the following gas-phase reactions, write the rate expression in terms of the appearance of each product or disappearance of each reactant. N2(g)+2H2(g)N2H4(g)
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