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!
Ozone is a trace atmospheric gas that plays an important role in screening the Earth from harmful ultraviolet radiation, and the abundance of ozone is commonly reported in Dobson units. One Dobson unit is the thickness, in thousandths of a centimetre, of a column of gas if it were collected as a pure gas at 1.00 atm and 0°C. What amount of O3 (in moles) is found in a column of atmosphere with a cross-sectional area of 1.00 dm2 if the abundance is 250 Dobson units (a typical mid-latitude value)? In the seasonal Antarctic ozone hole, the column abundance drops below 100 Dobson units; how many moles of ozone are found in such a column of air above a 1.00 dm2 area? Most atmospheric ozone is found between 10 and 50 km above the surface of the earth. If that ozone is spread uniformly through this portion of the atmosphere, what is the average molar concentration corresponding to
(a) 250 Dobson units,
(b) 100 Dobson units?
elemental boron as a gas is produced in one industrial process by heating diboron trioxide with magnesium metal also
4. How many of the following electron configurations for the species in their ground state are correct? I. Ca: 1s22s22p63s23p64s2II. Mg: 1s22s22p63s1III. V: [Ar] 3s23d3
If 24mL of 6.6 M H2SO4 was spilled define what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid
Water is 11.2% hydrogen and 88.8% oxygen by weight. If 75.5 grams of hydrogen are produced by decomposing water, how many grams of water were decomposed and how many grams of oxygen were produced
Problem- For a first order reaction with an [A]o = 35 and a final concentration [A]t = 5 at 85.0 minutes, what is the rate constant for the reaction
Determine the volume (mL) of 15.0 M sulfuric acid needed to react with 45.0 g of aluminum to produce aluminum sulfate. Determine the % yield if 112 g of aluminum sulfate is produced under the above conditions.
If the pH is buffered at 8.2 (as is historically typical for the ocean), what is the molar solubility of CaCO3? F) If the pH is buffered at 7.5, what is the molar solubility of CaCO3?
Borazine, (BH)3(NH)3, is an analog of C6H6, benzene. It can be prepared from the reaction of diborane with ammonia, with hydrogen as another product; or from lithium borohydride and ammonium chloride, with lithium chloride and hydrogen as the othe..
A certain person had a brain that weighed 1.40 kg and contained 4.89 x 1010 cells. Presuming that each cell was completely filled with water density = 1.00 g/mL compute the length of one side of such a cell if it were a cube.
When 50.0 grams of metal at 75.0 °C is added to 100. grams of water at 15.0 °C, the temperature of the water rises to 18.3 °C. Assume that no heat is lost to the surroundings.
The rate constant of a chemical reaction increased from 0.100 to 3.10 upon raising the temperature from 25.0 to 51.0. Calculate the value of 1/t2-1/t1
Xanthine is a biological precursor of uric acid. What can you say about the molar absorptivity of xanthine if absorbance measurements of 250 μM, 300 μM, and 350 μM buffered aqueous solutions
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