Silicon dioxide and solid carbon react to form solid silicon and carbon monoxide.What is oxidized?
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2. How would Evelyn Effec affect the products formed from the dehydration of 2-methylhexanol (My product is 1-methylcyclohexene)? How could you modify the experiment to check for the Evelyn Effect?
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Natural gas is primarily methane, CH4, and is used to heat homes. A typical home is approximately 2000 ft2 and the ceilings are 8 ft high. The following data may be helpful: The heat capacity of air is 1.01 J/g·K and the and the enthalpy of combustion of methane is -890.8 kJ/mol. Assume that the molecular weight of air is the same as nitrogen, its major component. How many grams of methane are required to raise the temperature in the home from 35°F to 66°F? How many grams of CO2 does this reaction produce?
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Two 20.0 g ice cubes at −11.0 ∘C are placed into 225 g of water at 25.0 ∘C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature, Tf, of the water after all the ice melts.
| heat capacity of H2O(s)H2O(s) | 37.7 J/(mol⋅K) |
| heat capacity of H2O(l)H2O(l) | 75.3 J/(mol⋅K) |
| enthalpy of fusion of H2OH2O | 6.01 kJ/mol |
Tf= ∘C
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Which of the following would be expected to lower the Tm for a phospholipid bilayer?
replacing a lipid containing unsaturated fatty acids with one containing saturated fatty acids.
replacing a lipid containing 18-C fatty acids with one containing 16-C fatty acids.
adding ions to bind to charged groups in the polar head groups.
decreasing the concentration of phospholipids.
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Make separate (50ml) of .05M chromium (III) nitrate and a 0.20M Cobalt (II) nitrate in distilled water.
After making the stock solution make five standards in which the absorbance falls from 0.1 A.U to 1AU
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Calculate the volume of nitrogen dioxide produced at 712.5 torr and 23.3°C by the reaction of 7.85 cm3 copper (density = 8.95 g/cm3) with 207.3 mL of concentrated nitric acid if the acid has a density of 1.42 g/cm3 and contains 68.0% HNO3 by mass). Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l)
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Why is copper sulfate (CuSO4 ) not commonly found as a naturally-occurring copper ore mineral, even though it is easily made during leaching of other copper minerals?
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4.60 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.10 M, where it remained constant.
A(s) <===> B(g) + C(g)
Then, the container volume was doubled and equilibrium was re-established. How many moles of A remain?
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Saturated steam at 100 C is heated to 400 C. Use the steam table to determine the required heat input if continuous stream flowing at 150 kg/min undergoes this process at constant pressure.
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Consider the reaction
2AgNO3(aq) + H2SO4(aq) -> Ag2SO4(s) + 2HNO3(aq)
You combine 2.33ml of 1.77M AgNO3(aq) and 1.77mL of 2.33M H2SO4(aq) and the react according to the reaction above. a)How many grams of Ag2SO4(s) could you make? b) How many individual units of the polyatomic species, NO3-, would be in solution?
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Please answer both questions.
One millimole of Ni(NO3)2 dissolves in
270.0 mL of a solution that is 0.400 M in ammonia.
The formation constant of
Ni(NH3)62+ is
5.5×108.
1. What is the initial concentration of Ni(NO3)2 in the solution?
2. What is the equilibrium concentration of Ni2+(aq ) in the solution?
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I'm confused on how bonding works with metalloids. Will it be an ionic or covalent bond? For example P and As
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