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3 years ago

Express in scientific notation. Choose the answer with the proper number of significant figures.

Chemistry

1 answer:

bazaltina [42]3 years ago

3 0

Answer:

4.5 times 10 = 45

Explanation:

"Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant."

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Anni [7]

Answer:

50000 dollars or 5 e5

Explanation:

Mr. Garibay has $5.0 * 10^4$ dollars in his bank.

Scientific notation represents the data in the format of expanded number or with e character.

For instance, 5.0 * 10^4 dollars = 50000 dollars or 5 e5

3 0

3 years ago

The radius of an indium atom is 0.163 nm. If indium crystallizes in a face-centered unit cell, what is the length of an edge of

adoni [48]

<u>Answer:</u> The edge length of the unit cell is 0.461 nm

<u>Explanation:</u>

We are given:

Atomic radius of iridium = 0.163 nm

To calculate the edge length, we use the relation between the radius and edge length for FCC lattice:

$a=2\sqrt{2}R$

Putting values in above equation, we get:

$a=2\sqrt{2}\times 0.163=0.461nm$

Hence, the edge length of the unit cell is 0.461 nm

8 0

3 years ago

This happens in diffusion. Choose the correct answer(s)

svlad2 [7]

The answer is d. particles move from an area of high concentration to low concentration.

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3 years ago

Hydrogen gas explosive within range of 4%-75% v/v. Assuming that each student in your class produces 6 L of H2 and that the lab

SpyIntel [72]

To determine whether the amount of H2 in the lab is dangerous, we first need to know how much hydrogen gas is present in the room in units of percent by volume. For this particular problem, we cannot exactly determine since we do not know the total volume of the room. Hope this answers the question.

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3 years ago

How are flagella and cilia alike?

Hoochie [10]

Answer: Both store of celluar materials

Explanation:

I have the same question here is proof:

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2 years ago