Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth's oceans, because of their high heat capacity, can absorb heat and therefore act to slow down global warming. How much heat would be required to warm Earth's oceans by 1.0 °C? Assume that the volume of Earth's oceans is 137 * 10^7 km3 and that the density of seawater is 1.03 g/cm^3. Also assume that the heat capacity of seawater is the same as that of water.
2. Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons.
a) If the radius of a neutron is 1.0 x 10^-13cm, calculate the density of a neutron in g/cm^3. (volume of a sphere = 4/3pr3)
b) Assuming that a neutron star has the same density as a neutron, calculate the mass in kilograms of a small piece of a neutron star the size of a spherical pebble with a radius of 0.10 mm.
3. A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 * 10^7 mi^2 in diameter, while the diameter of the 2002 hole was 6.9 * 10^6 mi^2. Calculate the difference in size between the two holes in square meters.
It takes 53.0 to raise the temperature of an 10.2 piece of unknown metal from 13.0 to 24.0. What is the specific heat for the metal
if 98 g grams of CaCN2 reacts with 59 g grams of H2O, what mass of NH3 will be formed.
What are the advantages and disadvantages of gas chromatography compared to other chromatographic techniques
the mass of water is 92.6 grams, the initial temperature of the water is 58.9 degrees celsius, the mass of teh liquid nitrogen added to the water is 57.1 grams, and the final temperature after the liquid nitrogen has vaporized is 29.6 degrees cels..
A piece of metal weighing 5.10g at a temperature of 48.6 degree Celsius was placed in a calorimeter into a 20.0o mL of water at 22.1 degree celsius, and the final equilibrium temperature was found to be 29.9 degree celsius. What is the specific he..
Calculate the partial pressure of each gas in the container. Express the pressure values numerically in atmospheres, separated by commas. Enter the partial pressure of methane first, then ethane, then propane.
Write Lewis structures, including resonance structure and formal charges if necessary
The drying oven, although thought to be set at 125°C, had an inside temperature of 84°C. How will this error affect the reported percent by mass of the limiting reactant in the salt mixture. too high, too low, or unaffected
In this experiment we reduced methylene blue with ascorbic acid using HCl as a catalyst. Given that the half reaction for the reduction of methylene blue is MB+(ox) +2H +2e -----> MBH2
What is the molar solubility of SrSO4 in pure water at 25ºC?
What is the FORMULA for the limiting reagent. What amount of the excess reagent remains after the reaction is complete. grams
"Air" bags for automobiles are inflated during a collision by the explosion of sodium azide, NaN3. The equation for the decomposition is 2NaN3(s) ? 2Na(s) + 3N2(g). What mass of sodium azide would be needed to inflate a 9.8-L bag to a pressure of 2...
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd