Exam (elaborations)
General Chemistry Final Exam Complete Questions And Answers
- Course
- Chemistry 101
- Institution
- Portage Learning
General Chemistry Final Exam Complete Questions And Answers
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General Chemistry Final Exam CompleteQuestions And Answers
Convert Degrees Celsius to Kelvin CORRECT ANSWERS T(K)= T(C) + 273.15
Absolute Zero for Celsius and Kelvin CORRECT ANSWERS -273.15 C
0 K The unit size of the Celsius and Kelvin scale is the same.
Boiling Point (C) and Kelvin and Freezing point CORRECT ANSWERS Boiling: 100 deg. C and 373.15 K
Freezing: 0 deg. C and 273.15 K
Extensive properties CORRECT ANSWERS Depends on the amount of the same
Ex: mass and volume (these are physical properties)
intensive properties CORRECT ANSWERS independent of the amount of the sample
-Only intensive properties can be used to identify the composition of the sample
ex: density, color, temperature
Density Calculation CORRECT ANSWERS D=M/V D=g/mL
nano- CORRECT ANSWERS 10^-9
kilo- CORRECT ANSWERS 10^3
centi- CORRECT ANSWERS 10^-2
Micro CORRECT ANSWERS 10^-6
milli CORRECT ANSWERS 10^-3
mega CORRECT ANSWERS 10^-6
millimeter to centimeter CORRECT ANSWERS 1 m = .1 cm
Atomic number for protons and how to calculate the number of protons CORRECT ANSWERS Atomic number (Z) Number of protons is the atomic number
Charge on an atom is determined by CORRECT ANSWERS the number of protons in an atom. Therefore a neutral atom must have the same number of protons and electrons Isotopes CORRECT ANSWERS atoms with the same number of protons but different number of neutrons
ex: every chlorine atom has 17 protons, but the same chlorine nuclei have 18 neutrons and some have 20 neutrons.
How to calculate isotopes protons, neutrons, and electrons: 133^Xe CORRECT ANSWERS Protons: 54 (Atomic number)
Electrons: 54 (protons = electrons)
Neutrons: 54 + x = 133 (mass number is 133) x= 79
Avogadro's number CORRECT ANSWERS 6.022 x 10^23
Elemental MM calculation CORRECT ANSWERS The MM of any naturally occurring element is the weighted some of the contribution from its isotopes. Σ [(Fractional Abundance)(Isotopic MM)]
(CO) Mon(o)- CORRECT ANSWERS Carbon monoxide
(SiO2) Di- CORRECT ANSWERS Sulfur dioxide
(NI3) Tri- CORRECT ANSWERS Nitrogen triiodide
(CBr4) Tetr(a)- CORRECT ANSWERS Carbon tetrabromide
(PCl5) Pent(a)- CORRECT ANSWERS Phosphorus pentachloride
(SF6) Hex(a)- CORRECT ANSWERS Sulfur hexaflouride
(IF7) Hept(a)- CORRECT ANSWERS iodine heptafluoride
B2H6 CORRECT ANSWERS diborane
CH4 CORRECT ANSWERS methane
NH3 CORRECT ANSWERS ammonia
H2O CORRECT ANSWERS water
HF CORRECT ANSWERS hydrogen fluoride
SiH4 CORRECT ANSWERS silane
PH3 CORRECT ANSWERS phosphine
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