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OleMash [197]
3 years ago
5

Andesitic rock is an igneous rock with a composition in between that of basaltic and granitic igneous rock.

Chemistry
1 answer:
Ne4ueva [31]3 years ago
8 0

Answer:

Explanation:

intristing

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A scientist obtains a set of measurements that are very close to one another. These can be said to be:
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I believe this is a K-12 test question. If the answers below are what you have on your test . . .

- Precise

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- None of the above

Then the answer is <u>precise</u>.

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SOME ONE HELP I FORGOT PIC!!! 20 POINTS AND BRAINLIEST!!!
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i think the next is two nuclei and still together but that stage is not anaphase. Anaphase is when the sister chromatids are pulled apart

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The United States has about which percentage of the world's coal reserves?
aev [14]

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The United States leads the world with over 260 billion short tons of recoverable coal reserves—28% of total global reserves and 50% more than Russia, which possesses the world's second largest reserves. so the answer would be 28%

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Which TWO statements describe the ocean floor giving brainliest pls help explain ur answer
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8 0
3 years ago
How many total atoms are in 0.670 g of p2o5?
scoray [572]

The molecular formula for compound is  P_{2}O_{5} mass of compound is 0.670 g.

To calculate number of atoms first calculate number of moles in the compound as follows:

n=\frac{m}{M}

Molar mass of  P_{2}O_{5} is 283.886 g/mol, thus,

n=\frac{0.670 g}{283.886 g/mol}=0.00236 mol

Thus, number of mole of P_{2}O_{5} is 0.00236 mol.

From the molecular formula 1 mole of P_{2}O_{5} has 2 mol of P (phosphorus) and 5 mol of O (oxygen).

Thus, number of moles of P and O in 0.00236 mol of P_{2}O_{5} will be:

n_{P}=2\times 0.00236 mol=0.00472 mol

Similarly,

n_{O}=5\times 0.00236 mol=0.0118 mol

Now, in 1 mol of an element there are 6.023\times 10^{23} atoms.

Number of atoms of P will be:

N_{P}=0.00472\times 6.023\times 10^{23}=2.84\times 10^{21}atoms

Similarly, number of atoms of O will be:

N_{O}=0.0118\times 6.023\times 10^{23}=7.11\times 10^{21}atoms

Total number of atoms will be sum of number of atoms of P and O:

N_{Total}=N_{P}+N_{O}=2.84\times 10^{21}+7.11\times 10^{21}=9.95\times 10^{21} atoms

Therefore, total number of atoms in P_{2}O_{5} will be 9.95\times 10^{21} atoms.

8 0
3 years ago
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