How much heat is released in the oxidation
How much heat is released in the oxidation of 3.68 L of methanol at 1.05 atm and 298 K? Give your answer in kJ (absolute value) to 3 significant figures.
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(a) Derive an expression for the wind speed as a function of the deflection angle. (b) What thickness of brass should be used to give theta=30 degrees at a wind speed of V=10 m/s?
On the basis of this model, what can you say (in general) about the change in soil water content with increasing depth?
An electron in the n = 7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 397 nm. What is the value of n for the level to which the electron relaxed?
When we rotate the polarizer, does the intensity of the reflected ray change? Which kind of polarization takes place here? Why? Please use your best judgment when answering this question.
If an element consisted of three isotopes in the following relative abundance, what would the atomic weight of the element be? this is a hypothetical example.
When excess aqueous ammonia is added to Ni(OH)2 the solid dissolves and the complex ion Ni(NH3)6^2+ is formed. Write the net ionic equation for the rxn.
Estimate the soil water content at the surface of the soil. Estimate the soil water content at a depth of 50 cm. Estimate the error variance s2.
8.69 g of zinc metal is heated in a dry test tube in aboiling water bath to 99.95 °C. The hot zinc metalis then dropped into 98.55 g of water at 20.65 °C in acalorimeter. The mixture of water and zinc eventually reaches 24.15°C
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