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riadik2000 [5.3K]
4 years ago
12

Can this balance be read to the nearest milligram?

Chemistry
1 answer:
djyliett [7]4 years ago
8 0

Answer:

what balance are you referring to?

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Which of the following chemical reactions produces water via a
DiKsa [7]

Answer:

Should be A, but also I think there should be an arrow between O2 and 2H2O

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____________ are solutions that resist changes in ph when moderate amounts of acids or bases are added and contain ions or molec
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Which of these are isotopes of each other? Boron-12, Carbon-12, Carbon-13, Nitrogen-13
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5 0
4 years ago
Given the balanced equation 2C4H10 + 13O2 → 8CO2 + 10H2O, how many moles of CO2 are produced when 14.9g of O2 are used?
Anna [14]

Answer: The number of moles of CO_2 produced are, 0.287 moles.

Explanation : Given,

Mass of O_2 = 14.9 g

Molar mass of O_2 = 32 g/mol

First we have to calculate the moles of O_2

\text{Moles of }O_2=\frac{\text{Given mass }O_2}{\text{Molar mass }O_2}

\text{Moles of }O_2=\frac{14.9g}{32g/mol}=0.466mol

Now we have to calculate the moles of CO_2

The balanced chemical equation is:

2C_4H_{10}+13O_2\rightarrow 10H_2O+8CO_2

From the reaction, we conclude that

As, 13 mole of O_2 react to give 8 moles of CO_2

So, 0.466 mole of O_2 react to give \frac{8}{13}\times 0.466=0.287 mole of CO_2

Therefore, the number of moles of CO_2 produced are, 0.287 moles.

3 0
3 years ago
How many valence electrons does a fluorine atom contain?<br> a. 2<br> b. 5<br> c. 7<br> d. 9
juin [17]

F---atomic number 9---1s2 2s2 2p5 -----7 electrons

6 0
3 years ago
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