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Given the following reaction: 2 KClO3(s) 2KClO3(s) + 3 O2(g)
What mass of KClO3 will produce 250mL of O2 gas, collected by water displacement, at an atmospheric pressure of 745 torr and a temperature of 30.0 C? The vapor pressure of water at 30.0 C is 31.8 torr.
Find a corresponding criterion for processes at constant V and T. The new thermodynamic variable that is used to express this criterion is called the Helmholtz free energy
A 75.0 mL volume of 0.0902 M Al(NO3)3 is diluted with water to a volume of 1.00 L. Then a 0.000100 L volume of this new solution was diluted with water to a volume of 0.00750 L. Calculate the molarity (M) of Al3+ in the final solution.
Calculate the pH of a dilute solution that contains a molar ratio of potassium acetate to acetic acid (pKa = 4.76) of (a) 2:1; (b) 1:3; (c) 5:1; (d) 1:1; or (e) 1:10.
3.20 Existing records reveal the following information about events A and B, where A = a long March warm spell and B = an April flood. Are variables A and B independent. Prove.
Given that B(SiO) 640 kJ/mol, show that bond enthalpy considerations predict that silicon-oxygen compounds are likely to contain networks of tetrahedral with SiO single bonds
A dioxin-contaminated water source contains 0.081% dioxin by mass. How much dioxin is present in 4.2 L of this water? (Assume that the density of the solution is 1.01 g/mL.)
The reading on a mercury manometer at 25 deg C (open to the atmosphere at one end) is 56.38 cm. The local acceleration of gravity is 9.832 m s-2.
If 129 g of ice at 0.0°C is added to 2.48 L of water at 77°C, what is the final temperature of the mixture
a 20 ml solution of ti2 40 mm can be oxidized by reacting with iron ions from fecl3. a titration is performed with a
Calculate the frequency of the photon emitted by a hydrogen atom when its electron droops from the n=3 state to the n=1state
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:
What is the longest wavelength of radiation with enough energy to break carbon-carbon bonds
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