Calculations
Chemical Reactions
Nomenclature and Molecules
Properties of Compounds and Elements
Random
100
The conversion of 2.5 kg to µg
What is 2.5 x 109 µg?
100
The mass of argon in a sample at STP that occupies 56.2 liters
What is 100. grams?
100
The molecular formula of mercury(II) sulfate
What is HgSO4?
100
The type of change (chemical or physical) of freezing liquid Mercury
What is a physical change?
100
The experiment that proposed that protons and electrons were randomly distributed in a charged cloud
What is J.J. Thomson's Cathode Ray?
200
The number of moles of NaCl that are contained in 144 mL of a 1.65 M NaCl solution
What is 0.238 moles?
200
The missing element in the following reaction:
235U + 1n --> 142La + ? + 3n
What is 91Br?
200
The Lewis structure for BF3
What is
200
The more electronegative element between nitrogen and phosphorus
What is nitrogen?
200
The scientific notation for 13,040,000
What is 1.304×107?
300
The number of grams of Zn-71 left after 7.2 minutes if the half-life is 2.4 minutes and one had 100.0 g at the beginning
What is 12.5 g?
300
The enthalpy (endothermic or exothermic) of the drawn graph:
What is endothermic?
300
The polarity of BF3 (polar or non-polar)
What is non-polar?
300
The band on the electromagnetic spectrum that allows us to see color
What is visible light?
300
The point on the drawn chart where the compound is in the liquid phase
What is C?
400
The number of grams of H3PO4 that would be produced from 93.8 grams of PCl5 and 20.3 grams of H2O for the following reaction:
PCl5 + 4H2O => H3PO4 + 5HCl
What is 27.63 grams of H3PO4?
400
The net ionic equation for the following reaction:
AgNO3(aq) + KCl(aq) --> AgCl(s) + KNO3(aq)
What is Ag+(aq) + Cl¯(aq) -> AgCl(s)?
400
The molecular geometry of SF2
What is bent?
400
The type of mixture (homogeneous or heterogeneous) of an iced tea
What is heterogeneous? *ice
400
The isotope that contains 56 protons, 54 electrons, and 74 neutrons (include charge on final answer)
What is 130Ba2+?
500
The specific heat of a sample if 24.8 grams absorbs 275 J of energy and the temperature rises from 20.2 °C to 24.5 °C
What is 2.6 J/g°C ?
500
The species being oxidized in the following reaction:
3 Hg2+ + 2 Fe (s) --> 3 Hg2 + 2 Fe3+
What is Fe?
500
The weakest type of bond or attractive force
What are dispersion forces?
500
The solubility of barium sulfate in water
What is insoluble?
500
The orbital diagram of bromine
What is 