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The element gallium has two naturally occurring isotopes, 69Ga and 71Ga. The atomic mass of 69Ga is 68.9256 amu and 71Ga is 70.9247 amu. The average atomic mass of gallium is 69.723 amu. What is the percentage of 69Ga present in a naturally occurring sample?
Arrange the elements in order of decreasing ionization energy N MG O F Al
to prepare a 13.9 kg dog (assume volume of 13.9 L) for surgery, 0.0343 moles of an anesthetic was administered intravenously. The reaction in which the anesthetic is metabolized displayed a first half life of 132.5 minutes and a second half life o..
Gas A has a density of 0.20 g L, and gas B has a density of 0.80gL, both at the same specific temperature and prassure. Which gas diffuse faster
2noo2 makes no2 what mass of no2 is formed when no reacts with 384g o2? how many grams of no are required to react with
determine what mass of AgCl silver chloride can be formed from 1.03L of a 0.132M solution of AgNO 3 silver nitrate
Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by P
Solving this question helps the student to understand what is happening in a chemical reaction and to balance the given equation.
What is the volume in mL of 0.664 M HCl(aq) needed to neutralize the hydroxide ions present in 32.2 mL of 0.851 M NaOH(aq).
A 7.8g sample of C6H5NH3Cl is dissolved in water to make 450.mL of solution. What is the pH of the solution? pKb(C6H5NH2) = 9.37.
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 7.0X10^-2 M NaOH.
Many home barbeques are fueled with propane gas C3H8 What mass of carbon dioxide (in kg}) is produced upon the complete combustion of 18.9 { L} of propane (approximate contents of one 5-gallon tank)
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