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What is the specific heat of aluminum if 4,750 joules of heat energy added to 249 g of aluminum produces a recorded temperature change of 21.1 °C?
Describe the attractive and repulsive forces between an atom of oxygen and an atom of sodium .
What are some of the benefits of using a binary eutectic alloy in a physical application (e.g. electronics, plumbing, etc.) rather than using one of the pure metals that constitute the alloy independently? Provide two examples
What will be the likely effect of clearing forests and converting them to grasslands and crops on (a) the earth's reflectivity (albedo) and (b) the earth's average surface temperature?
The amount of nitrogen in an organic substance can be determined by an analytical method called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammonia.
3)Which statement describes the net ionic equation obtained between NaCl(aq) and KBr(aq). A) The net equation is Na+(aq)+ Br+(aq)= NaBr(s) B) All spectator ions cancel out, therefore there is no reaction.
An atom of element number 33 (As) is in its ground electronic state. Which one of the following sets of quantum numbers could not apply to any of its electrons
Write the formulas for each of the following ions and compounds: (a) tetrahydroxozincate(ll) (b) pentaaquachlorochromium
Problem- A 25.7mL volume prepared Na2H2Y solution titrates 25.0 mL standard .0107 MCa 2+ solution to the eriochrome black T endpoint. What is the molar concentration of the Na2H2Y solution
What is the coordination number for each of the following complexes? A. [Co(NH3)4(H2O)2]^3+ B. [Cr(EDTA)]^-
Calculate P,V and T for initial and final states of each process and produce a plot of the two processes on a P,V diagram. Without resorting to equations, explain why the result for part (b) is greater than or less than the result for part (a).
Because of its semiconducting properties, is sometimes used in electronic devices. The band gap energy for is 2.40 . What is wavelength of a photon with this energy
Given the following activation energies, what is the rate constatnt for a catalyzed and uncatalyzed decomposition of hydrogen peroxide(H2O2). Ea(uncatalyzed) 76kJ/mol, Ea(catalyzed) 19JkJ/mol
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