Which of the following physical properties would you expect for krypton (Kr)?
A. hard
B. conducts electricity
C. shiny
D. brittle
E. a gas at room temperature
Answer: E
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All of the following could enhance a single-celled thunderstorm except
A) a hot surface and an updraft dominated cloud. B) a cool surface and a downdraft dominated cloud. C) extensive areas of cloud mergers between adjacent clouds. D) vertical wind shear keeping precipitation separated from the uplift zone.
Which of the following is NOT a type of biomass?
A. agricultural crops B. fuel wood C. animal waste D. solid waste
Briefly explain the normalization rule in designing a relational database.
What will be an ideal response?
When solutions of H2SO4 and NaOH react, the balanced molecular equation is: H2SO4(aq) + 2 NaOH(aq) ? Na2SO4(aq) + 2 H2O(l) How much Na2SO4 is obtained when 4.00 g of H2SO4 reacts with 4.00 g of NaOH?
A) 2.98 g B) 5.80 g C) 7.10 g D) 8.00 g