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gayaneshka [121]
3 years ago
12

Scientific notation is

Chemistry
1 answer:
Murrr4er [49]3 years ago
8 0

Answer:

Scientific notation is a system in which quantities are too big or too tiny to compose in decimal form.

Key words:

1: Scientific

2: Quantities

3: Decimal

Please mark brainliest

<em><u>Hope this helps.</u></em>

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A transition to renewable energy and to replace fossil fuels would take care of economically producing fine greens. Also, a transition to energy conservation and efficient energy use would help in this process.

Have a great day!

5 0
3 years ago
A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to prod
Olin [163]

Answer:

The answer is 6.25g.

Explanation:

First create your balanced equation. This will give you the stoich ratios needed to answer the question:

2C8H18 + 25O2 → 16CO2 + 18H2O

Remember, we need to work in terms of NUMBERS, but the question gives us MASS. Therefore the next step is to convert the mass of O2 into moles of O2 by dividing by the molar mass:

7.72 g / 16 g/mol = 0.482 mol

Now we can use the stoich ratio from the equation to determine how many moles of H2O are produced:

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x = 0.347 mol H2O

The question wants the mass of water, so convert moles back into mass by multiplying by the molar mass of water:

0.347 mol x 18 g/mol = 6.25g

8 0
3 years ago
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What happens when lead nitrate and potassium iodide are mixed?
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Answer:

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Th PbI2 is the insoluble yellow precipitate

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A solution that contains a large amount of salt and a small amount of water is said to be a _______ solution. A. diffused B. uns
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Answer:

D. Concentrated

Explanation:

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where are the first repost of new scientific discoveries published A.) Internet Sites B.) Magazines C.) encyclopedias D.) Scient
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