How many moles are

in 12.0 a sample NiCL2

Which of the alkynes below, after undergoing an acid-catalyzed hydration, would be expected to produce two different ketones in nearly equivalent yields? 4-methyl-1-pentyne 1-hexyne 3-methyl-1-pentyne 3-hexyne 2-hexyne?

Which of these do scientists use to study the world around them? 1. Hypothesis 2. Inductive reasoning 3. Scientific method 4. Deductive reasoning

What mass of hydrogen will be produced by the reaction of 67.3 g of tin with excess water according to the following reaction?

Which quantity represents 0.500 Mole at STP

Difference between electromagnetic waves in solar radiation and terrestrial radiation

Does a mole of hydrogen have the same mass as a mole of oxygen? explain your answer.

A 0.500-L sample of H₂SO₄ solution was analyzed by taking a 100.0mL aliquot and adding mL of. After the reaction occurred, an excess of ions remained in the solution. The excess base required mL of for neutralization.

Ammonia can be prepared by the reaction of magnesium nitride with water. The products are ammonia and magnesium hydroxide. Write and balance the equation.

Which period is the shortest in the long form of the periodic table? Name all the elements in this period.

A mole of gas at 0.0oC and 760. torr occupies 22.4 L. What is the volume of this gas at 25. oC and 760. torr