The two naturally occurring isotopes of copper are 63 cu

Question

Chemistry

• The two naturally occurring isotopes of copper are 63 CU, mass 62.9298 , and 65 C, mass 64.9278 u. The percent natural abundances of the two isotopes are (Atomic Mass of .546 u)
• 69.16 and 30.84    b. 45.16 and 5484     c. 81.85 and18.15   d.75.12 and24.88
• Which of the following is the highest temperature? { Tf .8 Tc+ 32, Tc =(Tf -32y1.8}
• 38 degrees Celsius   b. 96 degrees Fahrenheit   c. 302 K  d. the freezing point of water
• .............. and ........... reside in the atomic nucleus.
• Protons and electrons   b. electrons and neutrons  c. electrons  d. nucleus
• Binary Molecular compounds are made of a metal and a non-metal.
• TRUE   b. FALSE
• Which is the smallest and lightest subatomic particle?
• Predict the empirical formula of the ionic compound that forms from aluminum and oxygen.
• AIO   b. AI3O2   c. AI2O3   d. AI2O
• The name of the ionic compound Mg(CIO4) is?
• How many moles of oxygen gas are required to burn 2.8 mol octane, C8H18?
• In the production of aluminum oxide by reaction of 3.0 g Al with excess oxygen gas, how many grams of aluminum oxide can be made if the expected percent yield is 50%? [.9815 g/mol]
• 2.83    b. 5.67   c. 4.17   d. 76.2
• Calculate the molarity of a hydrochloric acid solution that is 12.25% HCl by mass and has a density of 1.10 g/ mL [ CL= 35.4527 g/mol ]
•  6.01   b. 21.9 c. 3.7  d.19