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Leya [2.2K]
3 years ago
15

The ____________________ Era accounts for most of the history of Earth.

Chemistry
2 answers:
Slav-nsk [51]3 years ago
6 0
Pretty sure it's the Precambrian.

balandron [24]3 years ago
4 0
Yup! It's the Precambrian! :)
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What does lithium 6 and lithium 7 look like
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Lithium 6 would have 6 valence electrons in the outer orbital, while lithium 7 would have 7 in the outer orbital. 
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3 years ago
What is the chemical formula for 8.6 mol of sulfur and 3.42 mol of phosphorus
adell [148]

The chemical formula for the compound containing 8.6 mol of sulfur and 3.42 mol of phosphorus is P₂S₅

<h3>How do I determine the formula of the compound?</h3>

From the question given above, the following data were obatined:

  • Sulphur (S) = 8.6 moles
  • Phosphorus (P) = 3.42 mole
  • Chemical formula =?

The chemical formula of the compound can be obtained as follow:

Divide by their molar mass

S = 8.6 / 32 = 0.26875

P = 3.42 / 31 = 0.11032

Divide by the smallest

S = 0.26875 / 0.11032 = 2.44

P = 0.11032 / 0.11032 = 1

Multiply by 2 to express in whole number

S = 2.44 × 2 = 5

P = 1 × 2 = 2

Thus, the chemical formula is P₂S₅

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5 0
1 year ago
How is genetic information is the same as a plum tree.
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This work was done in the European plum (Prunus domestica). The gene for PPV coat protein was separated from the PPV virus and inserted into the plum DNA, which was then regenerated and grown into complete plum trees. These trees now had the additional gene in their DNA and became resistant to PPV.

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An inherited behavior or physical characteristics that helps an organism survive and reproduce Natural selection Predation Adapt
KiRa [710]

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Hurry it’s for a test!! The arctic fox and gray wolf are two examples of
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