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In-s [12.5K]
3 years ago
11

Which element is the most reactive? A.sodium B.nickel C.carbon D.oxygen

Chemistry
1 answer:
ipn [44]3 years ago
7 0
Answer: A. Sodium
Explanation: the most reactive element is sodium
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find the molecular formula of the alkane represented in the mass spectrum. a mass spectrum. the peak at mass 100 has an 8% relat
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Answer: the molecular altatude of the supercalifragilistic gene should expand by 100%,

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8 0
1 year ago
A solution is prepared by mixing 200.0 g of water, H2O, and 300.0 g of
VikaD [51]

Answer:

Mole Fraction (H₂O)  =  0.6303

Mole Fraction (C₂H₅OH)  =  0.3697

Explanation:

(Step 1)

Calculate the mole value of each substance using their molar masses.

Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol

Molar Mass (H₂O): 18.014 g/mol

200.0 g H₂O            1 mole
---------------------  x  ------------------  =  11.10 moles H₂O
                                 18.014 g

Molar Mass (C₂H₅OH): 2(12.011 g/mol) + 6(1.008 g/mol) + 15.998 g/mol

Molar Mass (C₂H₅OH): 46.068 g/mol

300.0 g C₂H₅OH              1 mole
----------------------------  x  --------------------  =  6.512 moles C₂H₅OH
                                         46.068 g

(Step 2)

Using the mole fraction ratio, calculate the mole fraction of each substance.

                                            moles solute
Mole Fraction  =  ------------------------------------------------
                               moles solute + moles solvent

                                                  11.10 moles H₂O
Mole Fraction  =  -------------------------------------------------------------
                               11.10 moles H₂O + 6.512 moles C₂H₅OH

Mole Fraction (H₂O)  =  0.6303

                                             6.512 moles C₂H₅OH
Mole Fraction  =  -------------------------------------------------------------
                               11.10 moles H₂O + 6.512 moles C₂H₅OH

Mole Fraction (C₂H₅OH)  =  0.3697

7 0
2 years ago
Please I need helppppp
lord [1]

Answer:

FeCl_{2} +H_{2} S->FeS + 2HCl

Explanation:

I am assuming that we have to balance this equation. On the left side, we have one Fe, 2 H, 2 Cl, and 1 S. On the right side, we have 1 Fe, 1 H, 1 Cl, and 1 S. Adding a 2 as a coefficient in front of the HCl on the right side will make 2 H and 2 Cl instead, balancing the overall equation.

3 0
3 years ago
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Which hand is negatively changed?<br><br> A.<br> B.<br> C.<br> D.
Lemur [1.5K]

Answer:

I think B

Explanation:

There are more negative ions than positive ions

6 0
3 years ago
Jack walks outside in the afternoon and noticed the clouds are very dark. He states that it looks like it will rain very soon. H
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Answer:

I think it would be A but it might be B please tell if wrong

7 0
4 years ago
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