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QUESTION 1. Why is the solar cell considered to be regenerative?
QUESTION 2. A molecular monolayer of dye sensitiser on a flat semiconducting surface will harvest <1 % of the incident light, while the light harvesting efficiency is > 99 % for the same dye on a nanocrystalline film. Why?
Assume that you used a 0.560 g piece of pure aluminum in the synthesis of alum and collected 5.255 g of dry alum. What is your percent yield of alum
Question- The propane fuel (C3H8) used in gas barbeques burns according to the following thermochemical equation-
Problem- Question: The complete combustion of octane, C8H18, a component of gasoline, proceeds as follows: 2C8H18(l)+25O2(g)?16CO2(g)+18H2O(g)
The results of the experiment supported the hypothesis of semiconservative replication, which was proposed by Watson and Crick.
What is the rate of consumption of O2 in a combustion reaction carried out in a 11.00 L flask if 6.30 mmol of oxygen is consumed in 25.6 s?
Consider the reaction when aqueous solutions of barium acetate and chromium(III) iodide are combined. The net ionic equation for this reaction is
Give equations to show how sulfuric acid can convert 4-methycyclohexene into a mixture of four isomeric C7H12 compounds (including starting material). Predict the relative amounts of each isomer.
A solution of ethyl acetate and sodium hydroxide was prepared at t=0 at 5*10-3 mol/L ethyl acetate and 8*10-3 mol/L of sodium hydroxide. After 400 second at 25 deg.c, 25ml of aliquot was found to neutralize 33.3ml of 5*10-3 mol/L of HCl. What is the ..
How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca(NO3)2 and 2.40 moles of Li3PO4? Reaction: Ca(NO3)2 + Li3PO4 --> LiNO3 + Ca3(PO4)2
the reaction 2al 3mno ----gt al2o3 3mn proceeds till the limiting substance is consumed. a mixture of 220g al and
determine the specific heat of a material if a 35 g sample of the material absorbs 48 j as it is heated from 298 k to 313 k
Uranium hexaflouride is a solid at room temperature but boils at 56 C. Determine the density of uranium hexaflouride at 60 C and 745 torr.
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