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Arlecino [84]
3 years ago
13

Determine how many atmospheres of pressure are equal to 65.78 mm of Hg

Chemistry
1 answer:
Sloan [31]3 years ago
4 0
1 ATP = 760 mm Hg
x ATP = 65.78 mm Hg 
cross-multiply and you'll get:
0.08655 ATP
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3 years ago
Use the word bank to complete the charts about the metrics system measurement
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Answer:

Length

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5 0
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One mole of carbon will have the same number of particles as one mole of hydrogen.
AVprozaik [17]
And the answer is False,it does not have the same number with particles as the one mole of hydrogen.
3 0
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Read 2 more answers
Sodium is going in group 1, period 3. It contains A. One valence electron in its 3rd energy shell B three valence electron in it
topjm [15]

Answer:

The correct answer is option A, that is, one valence electron in its third energy shell and option C, that is, 11 electrons and 11 protons.

Explanation:

The outermost electrons and the ones that take part in the process of bonding are termed as valence electrons. The atomic number of sodium is 11, thus, it possesses 11 protons and the atoms are neutral so it suggests that sodium has 11 electrons. By electronic configuration, it can be seen that in sodium, two electrons are present in the first shell, 8 in the second, and only one electron in the third shell, that is, 2.8.1. The electron present in the third shell is the valence electron.

5 0
3 years ago
A researcher claims that an ancient scroll originated from greek scholars in about 500 bce. a measure of its carbon-14 decay rat
Naddik [55]
The amount of substance present in a certain object with a given half-life in terms of h can be expressed through the equation,

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where A(t) is the amount of substance after t years and A(o) is the original amount. In this item we are given that A(t)/A(o) is equal to 0.89. Substituting the known values,

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The value of t from the equation is 963.34 years.

<em>Answer: 963 years</em>
8 0
3 years ago
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