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Suppose you are trying to dope the semi-conductor Ge so that it will be an n-type semi-conductor. Which of the following elements would be a suitable dopant?A) GaB) BC) AsD) SnE) Si
Ethylene, C2H4, and water react under appropriate conditions to give ethanol. The reaction is C2H4(g) + H2O(g) C2H5OH(g) An equilibrium mixture of these gases at a certain temperature
Na2CO3 + CaSO4 --> CaCO3 + Na2SO4 Assuming that this reaction is complete and that there is 153mg/l of CaSO4 initially present, what is the mass load of the soda ash taht must be added to complete the reaction in:
Redraw the Lewis structure using overlapping valence bonds enclosing pairs to show that carbon and nitrogen obey the octet rule.
Which of the following is less soluble in hexane, ethanol or CCl3H(l). Don't try to type the subscripts, just use letters and numbers.
What is the molecular formula of a compound with a percentage composition 26.7% P, 12.1% N, and 61.2% Cl and a molecular mass of 695u.
Write balanced net ionci equations for the following electrolysis reactions using platinum electrodes 1. aquos potassium fluoride
on a beautiful summer day a group of friends have a picnic. of course there is a six pack of beverage on ice for
A buffer solution is prepared by mixing 50.0mL of 0.300 M NH3(aq) with 50.0mL of 0.300 M NH4Cl(aq). The pKb of NH3 is 4.74. NH3 + H20 ----> NH4+ + OH-
How much heat (in kj) is needed to convert 776g of ice at -10 degrees celsius to steam at 126 degrees celsius. (the specific heat of ice water and steam are 2.03 J/g . C, 4.184 J/g . C, 1.99 J/g . C, respectivley. The Heat of Fusion of water is 6...
A 100. mL sample of 0.200 M aqueous hydrochloric acid is added to 100. mL of 0.200 M aqueous ammonia in a calorimeter whose heat capacity (excluding any water) is 480. J/K. The following reaction occurs when the two solutions are mixed.
what is the dose in rads to the animal in the first 4.0 hours following the ingestion of the radioactive material?
What is the molarity of a Na2Cr2O7 solution if 22.5 mL of it is required to oxidize 33.0 mL of 0.150 M Fe(NH4)2(SO4)? The reaction products include Cr3+ and Fe3+.
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