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For the subsequent questions, consider the reaction between magnesium and oxygen.
Mg(s)+O2(g) -> MgO(s)
1. Explain how many grams of MgO are produced when 40.0 g of O2 react completely with Mg?
2. Explain how many moles of MgO are produced when 0.20 moles of O2 react completely
3. Explain How many moles of oxygen gas are needed to react with 4.0 moles of Mg?
After losing the electron, how many protons will Na have in its nucleus? Sodium (Na), atomic number 11, has a tendency to lose an electron in the presence of chlorine
What is the pH of the resulting solution if 15.0 ml of 0.450M NaH2PO4 is mixed with 20.0 ml of 0.350M Na2HPO4?
The simulated APT spectrum of a compound with the molecular formula C4H8 is shown below. Draw a structure that is consistent with this data.
If all of the energy from the emitted alpha particles is absorbed by the animal's tissues, and if the energy of each emission is what is the dose in rads to the animal in the first 4.5 hours following the ingestion of the radioactive material
what is the energy difference between the heats of formation you calculated for carbocation A and B?
Give an example of a biological reaction in which water participates as a reactant and a reaction in which it participates as a product.
The pressure on a sample of liquid water is increased from 1.00 bar to 100.00 bar at a constant temperature of 20 find h,u,q,and w. assume that the volume of the liquid water is constant
the rate law for the decomposition of n2o5 is rate kn2o5. if k 1.0 x 10-5exp s-1 what is the reaction rate when the
Gives what happens at low pH for aluminum hydroxide. A) Al(OH)3 precipitates B) Al precipitates C) Al dissolves D) Al(H2O)63+ dissolves
Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in n = 1 and the atom absorbs a photon of light with an energy of 2.044 × 10-18 J.
Find the Net Iconic Equations for these Chemical Reactions- a. Cu+4HNO3(aq)= Cu (NO3)2 (aq)+2NO2(g)+2H2O(l) b. Cu(NO3)2(aq)+2NaOH(aq)=Cu(OH)2(s)+2NaNO3(aq)
When a sample of DNA forms a double helix the measured deltaG is -17 kcal/mol at pH 7.0, 1 M NaCl, and 37 degrees C. If the enthalpy change for this process is -63 kcal/mol. What is the entropy change for this system
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