1. Most of the earth's surface is covered with

A Grignard reagent was generated by reacting 1‑bromobutane with magnesium metal in THF solution. Addition of 2‑butanone and ammonium chloride generated the desired alcohol product.

If the reaction of 3.50 moles of lithium with excess hydrofluoric acid produced a 75.5% yield of hydrogen gas, what was the actual yield of hydrogen gas? unbalanced equation: li + hf lif + h2 1.32 mol h2 1.75 mol h2 2.32 mol h2 2.65 mol h2

A young man sets a goal to compete in a marathon in two weeks. He started training last week by exercising three to four times a week with his friend.

Which element is present in all organic compounds? (1) nitrogen (2) oxygen (3) carbon (4) sulfur

Count the total number of atoms in CaCO3: 2 3 4 5 6

Which statement best describes a bacterial cell? A It contains more than one cell. B It is a complete organism. C It is part of a larger organism. D It contains different kinds of cells

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false