If a sample contains 21.2 g N, how many moles of N does it contain?

0.66 mol

1.51 mol

14.01 mol

297.01 mol

An explanation and science that has a lot of evidence to back it up is a scientific

How long will it take a spaceship traveling at the speed of light to reach planet 10,000 light years away

A 5.00g sample of a carbohydrate (compound containing carbon, hydrogen, and oxygen) is found to contain 2.006g carbon, 0.334g hydrogen, and 2.66g oxygen. What is the percent by mass of oxygen in the carbohydrate

15PTS! Give the element that is represented by the symbol Cr. Describe one use for the element

What is the difference between a molecular formula and a molecular modle?

Which characteristic provides clues to how igneous rocks were formes? A textures B color C luster D streaks

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The gas described in parts a and b has a mass of 1.66 g. the sample is most likely which monatomic gas?

What is the oxidation number of N in NH4NO3

Aqueous magnesium chloride and hydrogen gas are produced when solid magnesium reacts with aqueous hydrochloric acid (hcl). what is the equation for this reaction?