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10 Cards in this Set
- Front
- Back
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The amount of an ingested substance that kills 50% of a test sample of animals.
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Lethal Dose LD₅₀
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What two quantities does toxicity depend on?
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1. Amount of toxic substance
2. Mass of the organism |
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The ______________________ the LD₅₀, the more dangerous it is.
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Smaller (lower)
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6.02 X 10²³ =
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1 mole
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The mass of 1 mole of a substance.
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Molar Mass
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A convenient way to express numbers that have many zeros
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Scientific Notation
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Write the following number in scientific notation
234,000 |
2.34 X 10⁵
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Write the following number in scientific notation
0.00052 |
5.2 X10⁻⁴
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What is the volume of 1 mole of any gas at STP?
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22.4L
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To convert from grams to moles, you _______________________ by molar mass.
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Divide
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