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• The density of a sample of aluminum is 2.70 g/cm3. You submerse a sample of aluminum in water, and the volume of the water rises 1.3 L (1.3 L is displaced by the aluminum). Using the correct number of significant figures, what is the mass of the sample?
  
• What is the conversion factor used to kilometers to meters?
  
• Which of the following events did NOT affect Jews returning to Palestine from 1900-1945? Increased feelings of Zionism The Holocaust in Europe Jewish Diaspora Balfour Declaration
  
• What is the ground state electron configuration for #"O"^(2-)# ion?
  
• What is the electron configuration for an excited atom of phosphorous, ready to emit a photon of energy and return to ground state? (configuration has to follow all rules except be in lowest energy)
  
• Isotope: 35 AMU: 34.968852 % Abundance: 75.77; Isotope: 37 AMU: 36.965903 % Abundance: 24.23 The two isotopes for Cl are chlorine-35 and chlorine-37. What is the average mass for Cl up to 4 decimal places?
  
• A 25.0 g sample of an aluminum/mercury amalgam used for filling cavities is 7.00% mercury by mass. What is the mass of aluminum in the 25.0 g sample? (Use correct numbers of significant figures)
  
• Which nuclide will decay by positron and what isotope will be the left over? Both answers must be correct. (Numbers represent the mass number): 32S, 32P; 26P, 26S; 14O, 14N; 14N, 14O
  
• What is the name of #"NO"^(3-)# ?
  
• What's the difference between the formula of acetate and ethanoate?
  
• How do we find the oxidation number of an element?
  
• Which one is higher based on electronegativity, Ca or Na?
  
• Why does F have more electronegativity than He when is "higher" than it(like in the Periodic Table)?
  
• How many moles are present in 5.0 billion atoms of carbon? ___________ (Answer with the correct number of sig figs)
  
• How many molecules are present in 1.0 x 103g of water? (Answer with correct number of sig figs)
  
• How to convert 3.0 moles of #"ZnCl"_2 #into grams?
  
• How do I figure out the significant figures from a question that involves a scientific notation to solve?
  
• How to tell what intermolecular force is involved based on the boiling point and compound?
  
• If 2.54 L of hydrogen reacts with 3.13 L of oxygen at temperatures above 100 degrees Celsius, how many L of H2O(g) will form?
  
• Magnesium will burn in oxygen to form magnesium oxide as represented by the following equation 2Mg(s) + O2(g) -> 2MgO(s) What mass of magnesium will react with 498.1 ml of oxygen at 145.2 degrees Celsius and 0.927 atm?
  
• How do you know if a problem is a limiting reactant problem?
  
• How many liters of hydrogen gas can be produced at 313.4 K and 105.3 kPa if 23.4 g of sodium metal is completely reacted with water according to the following equation? 2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g)
  
• Through #(1,7)#; parallel to the line passing through #(2,5)# and #(-2,1)#?
  
• Find the inverse function of #f# #f(x) = (x-2)/(x+2)#?
  
• How do you find the inverse of #f(x)=x^3-1#?
  
• How do you complete the square to write in vertex form? #f(x)=-3x^2+4x+2#
  
• Find the average rate of change of the function between the given points? #f(x)=3sqrt(x-5)# #x=6, x=10#
  
• Find a polynomial of degree #3# that has zeros, #1#, #-2#, and #3#, and in which the coefficient of #x^2# is #3#?
  
• How would you graph this parabola? #y=(x+1)^2-3#
  
• What's the recursive formula? -1, 1, 4, 8, 13
  
• Find the middle term in the expansion of #(x^2+1)^18#?
  
• Find the 24th term in the expansion of #(a+b)^25#?
  
• Factor using the Binomial Theorem? #8a^3+12a^2b+6ab^2+b^3#
  
• Let #a# be an acute angle of a right triangle for which #sec a = 13/12# Find #csc a#?
  
• Find the exact value of the expression? #sec(π/3) cos(π/3) - tan(π/6)#
  
• Find the exact value? #3-2sin^2x=3cosx#
  
• Find the exact value? #2sinxcosx+sinx-2cosx=1#
  
• Find the exact value using the half angle identify? #tan(7π/8)#
  
• Evaluate the expression? #sin(cos^(-1)(3/4)-sin^(-1)(1/2))#