Consider the chemical equation.

2NBr3 + 3NaOH - - > N2 + 3NaBr + 3HOBr

If there are 40 mol of NBr3 and 48 mol of NaOH, what is the excess reactant?

N2

NBr3

NaOH

HOBr

An atom that has a charge because it has gained or lost electrons is A. an ion B. an isotope C. a new element

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When Truman walks across the tile floor in his kitchen, the sound of his shoes is loud and sharp. Which of the following best describes what would happen if he walked over carpet in the same shoes?

Is smelting a chemical or physical process?

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How would each of the following procedural errors affect the results to be expected in this experiment? Give your reasoning in each case. (A) Not all of the liquid was vaporized when the flask was removed from the water bath.

What volume of 2.00 m must be added to 150.0 ml of 1.00 m chloroacetic acid to produce a buffer solution having a ph of 3.30?

What is the mass (g) of 500. ml water if the density is 0.9901 g/ml?

Predict what the population of the United States will be in the year 2010

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