Regents Chemistry 67/68

Which element tends not to react with other elements?

If we look at the periodic table, there is one group of elements that consists of very stable and unreactive elements. This group is called

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A piece of silver metal weighting 194.3g is placed in a graduated cylinder containing

First we must write the formula for density. Density = mass/volume Now, let's figure out if we have all of the components for our equati

Ice, H2O(s), is classified as

In order for us to correctly classify ice, we must first learn what each answer choice means. 1. For a compound to be ionic, it must be a me

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A sample of gas is in a rigid cylinder with a movable piston. The pressure of the gas is kept consta

A sample of gas is in a rigid cylinder with a movable piston. The pressure of the gas is kept constant. If the Kelvin temperature of the...

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A magnesium atom that loses two electrons becomes a

A magnesium atom that loses two electrons becomes a (1) positive ion with a smaller radius (2) negative ion with a smaller radius (3)...

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What is the oxidation number of manganese in KMnO4?

What is the oxidation number of manganese in KMnO4? (1) +7 (2) +2 (3) +3 (4) +4 Answer and Explanation: We can figure out the oxidation...

Proteins, starch, and DNA are similar in that they are all

Proteins, starch, and DNA are similar in that they are all (1) organic compounds (2) parts of genes (3) made of amino acids (4) made of...

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A solid sample of a compound and a liquid sample of the same compound are each tested for electrical

A solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity. Which test conclusion...

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What is the number of electrons shared in multiple carbon-carbon bond in one molecule of 1-pentyne

What is the number of electrons shared in the multiple carbon-carbon bond in one molecule of 1-pentyne? (1) 6 (2) 2 (3) 3 (4) 8 Answer...

Which of the following is an electrolyte?

Which of the following is an electrolyte? a. NaCl (s) b. H2O c. CCl4 d. NaCl (aq) Solution: An electrolyte is a substance that is capable...

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