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Presume you have isolated a new photosynthetic microorganism that oxidizes H2S and passes the electrons to NAD+. Explain what wavelength of light would provide enough energy for H2S to reduce NAD+ under standard condition. Presume 100 % efficiency in the photochemical event and use E` of -243 mV for H2S and -320 mV for NAD+.
The titration of a weak base with a strong acid will have an end point a) with a pH greater than 7 b)with a pH less than 7 c) with a pH greater or less than 7 depending on the acid type d) there is not enough information to complete the statement
A gas weighing 33.62 g occupies a 10.00 liter flask at 27oc and 730 torr of pressure. what is the molar mass of the gas?
the mass of a sample of boron atoms is 5.60 g. how many boron atoms are in this
Determine the change in internal energy of the gas express your Answer in units of kJ and operates for nine minutes to heat the gas in a cylinder
Copper dissolves in nitric acid, producing copper (ll) nitrate. After reaction with sodium hydroxide and heating, copper nitrate changes to copper (ll) oxide. Calculate the percent yield of this process if 1.075 g of copper produced 1.075 g of cop..
A solution of 2.40 grams of the unknown hydrocarbon dissolved in 26.7 grams of naphthalene is found to freeze initialy at 76.2 Degree Celsius. Caluculate the apparent milar mass of the unknown hydrocarbon on the basis of the freezing-point depress..
An unknown mass of each of sand, initially at 24.0, absorbs 1970 of heat. The final temperature is 62.2 degrees C. Find the mass of sand.
Given that 4NH3(g)+5 O2(g)---> 4NO (g)+ 6H2O (g), If 8.2 moles of NH3 React with sufficient oxygen, how many moles of water will be formed?
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions.
how many moles of glucose, C6H12O6 can be burned when 60.0 mol of O2 is available?
If 7.75 L of radon gas is at 1.55 atm and -19 degrees Celcius, what is the volume at STP
A11.6 g sample of a certain gas was introduced into a constant volume container at 25 °C. if the container were heated to 175 °C, how many grams of gas must be vented from the container to keep the pressure of the gas constant
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