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3 years ago

8

Why does tap water or pool water typically test positive for the presence of chlorine

1 answer:

sweet-ann [11.9K]3 years ago

6 0

Pool water contains chlorine to keep it sanitary
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The reform reaction between steam and gaseous methane (CH4) produces "synthesis gas," a mixture of carbon monoxide gas and dihyd

kenny6666 [7]

Answer:

The answer is " $= 0.078 \ kg \ H_2$ ".

Explanation:

calculating the moles in $CH_4 =\frac{PV}{RT}$

$=\frac{(0.58 \ atm) \times (923 \ L) }{ (0.0821 \frac{L \cdot atm}{K \cdot mol})(232^{\circ} C +273)}\\\\=\frac{(535.34 \ atm \cdot \ L) }{ (0.0821 \frac{L \cdot atm}{K \cdot mol})(505)K}\\\\=\frac{(535.34 \ atm \cdot \ L) }{ (41.4605 \frac{L \cdot atm}{mol})}\\\\= 12.9 \ mol$

Eqution:

$CH_4 +H_2O \to 3H_2+ CO \ (g)$

Calculating the amount of $H_2$ produced:

$= 12.9 \ mol CH_4 \times \frac{3 \ mol \ H_2 }{1 \ mol \ CH_4}\times \frac{2.016 g H_2}{1 \ mol \ H_2}\\\\= 78 \ g \ H_2 \\\\= 0.078 \ kg \ H_2$

So, the amount of dihydrogen produced = $0.078 \frac{kg}{s}$

5 0

3 years ago

In the equation:

Ksenya-84 [330]

Answer:

B) 16 g

Explanation:

2H₂ + O₂ → 2H₂O

First we <u>convert 4 moles of O₂ into moles of H₂</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:

4 mol O₂ * $\frac{2molH_2}{1molO_2}$ = 8 mol H₂

Finally we <u>convert 8 moles of H₂ into grams</u>, using <em>its molar mass</em>:

8 mol H₂ * 2 g/mol = 16 g

Thus, the correct answer is option B).

6 0

3 years ago

Which of the following describes a double bond between two carbon atoms?

BlackZzzverrR [31]

Im pretty sure the answer is 4 but not 100 percent

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3 years ago

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Lead ions and magnesium ions both have a charge of 2+. predict the ionic equation for this reaction.

FinnZ [79.3K]

Answer:
PbMg

Explanation:
Because they both have a charge of 2+, they can be reduced and cancel each other out because 2 and 2 can be reduced to 1

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2 years ago

in this cut-away image of an atom, where is the red arrow most likely pointed at the greatest probability of locating an electro

emmasim [6.3K]

Answer:

c

Explanation:

3 0

3 years ago

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