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FinnZ [79.3K]
2 years ago
5

If the mercury in a manometer raises 30.0 millimeters due to a change in pressure, what is the corresponding change in pressure

in atm?
Chemistry
1 answer:
Nostrana [21]2 years ago
7 0

Answer:

0.03947 atm

Explanation:

The relationship between mmHg and atm is given as;

1 atm = 760 mmHg

x atm = 30 mmHg

Upon solving for x;

x * 760 = 30 * 1

x = 30 / 760 = 0.03947 atm

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m = 0.917 x 2.5
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What type of reaction is shown below? Check all that apply. Ca + 2H2O → Ca(OH)2 + H2 synthesis decomposition combustion single r
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The balanced reaction is

Ca + 2H2O → Ca(OH)2 + H2

Here this reaction can be compared with

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So here one reactant (A) is accepting a group which is being given by another compound (BC) however the A is not giving any group / element or ion

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So the correct answer is

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2 years ago
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In 1838, botanist Matthias Schleiden, determined that all plants are composed of cells. In 1839, anatomist Theodor Schwann propo
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Answer:

This question is incomplete; the complete part is:

A) All cell have a cell wall.

B) All cell arise from pre-existing cells.

C) All cell are capable of photosynthesis.

D) All cell can develop into any other type of cell.

The answer is B

Explanation:

The commonly known universal theory proposed in 1838 took the contribution from three remarkable scientists namely: botanist Matthias Schleiden, anatomist Theodor Schwann and biologist Rudolph Virchow. According to the question, Mathias discovered that all plants are made of cells, Schwann determined that all animals are made of cells while Virchow determined that all living things are composed of cells.

However, in addition to Virchow's discovery, he also discovered and proposed that "All cell arise from pre-existing cells", which till date forms part of the three components of the cell theory. The three parts are:

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6 0
3 years ago
Which of the following mixtures may be act as a buffer solution?
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Answer:

B) HF, NaF

Explanation:

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  • The buffer would have the weak acid HF and its conjugate base, F- which comes from the soluble salt NaF.
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The following models represent three different mixtures of the same solid in water,
velikii [3]

Answer:

A

Explanation:

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