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3241004551 [841]
3 years ago
6

A microscope containing two or more lenses is an

Chemistry
1 answer:
kicyunya [14]3 years ago
6 0
<span> A compound <span>lens microscope. </span></span>
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Which landscape is located at 42°N 75° W
vovikov84 [41]
The answer would be <span>Tug Hill Plateau</span>
7 0
3 years ago
How many liters of a 3 M NaOH stock solution would you need to make 552 mL of a 105 mM NaOH dilution
Ganezh [65]

Answer:

0.01932 L

Explanation:

First we <u>convert 105 mM to M</u>:

  • 105 mM / 1000 = 0.105 M

Next we <u>convert 552 mL to L</u>:

  • 552 mL / 1000 = 0.552 L

Then we use the following equation:

  • C₁V₁=C₂V₂

Where:

  • C₁ = 3 M
  • V₁ = ?
  • C₂ = 0.105 M
  • V₂ = 0.552 L

We<u> input the given data</u>:

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And <u>solve for V₁</u>:

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7 0
3 years ago
Radioactive cobalt-60 is frequently used in treating cancer. It took 24 years for a 10 gram sample to decay to 0.625 grams. What
-BARSIC- [3]

Answer:

Half life is 6 years.

Explanation:

T½ = In2 / λ

Where λ = decay constant.

But N = No * e^-λt

Where N = final mass after a certain period of time

No = initial mass

T = time

N = 0.625g

No = 10g

t = 24 years

N = No* e^-λt

N / No = e^-λt

λ = -( 1 / t) In N / No (inverse of e is In. Check logarithmic rules)

λ = -(1 / 24) * In (0.625/10)

λ = -0.04167 * In(0.0625)

λ = -0.04167 * (-2.77)

λ = 0.1154

T½ = In2 / λ

T½ = 0.693 / 0.1154

T½ = 6.00 years.

The half life of radioactive cobalt-60 is 6 years

5 0
3 years ago
Which part of the plant carries water and food to and from the leaves?
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Answer:

the stem, but if its more specific xylem cells

6 0
3 years ago
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Which of the following is the most common gas in the troposphere
Effectus [21]
The most common gas in the troposphere is nitrogen. 

I hope this helps!
7 0
4 years ago
Read 2 more answers
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