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2 years ago

An Olympic sized swimming pool has a volume of 660,000 gallons. What is the volume in megaliters?

Chemistry

1 answer:

svet-max [94.6K]2 years ago

4 0

Answer:

2.5 ML

Explanation:

1. Convert gallons to litres

There are 3.785 L in 1 US gal.

$\text{No. of litres} = \text{660 000 gal} \times \dfrac{\text{3.785 L}}{\text{1 gal}} = \text{2 500 000 L}$

2. Convert litres to megalitres

$\text{No. of megalitres} = \text{2 500 000 L} \times \dfrac{\text{1 ML}}{\text{1 000 000 L}} = \textbf{2.5 ML}$

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Franklin was performing an experiment by combining hydrochloric acid and sodium hydroxide. He measured the mass of his reactant

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Explanation:

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Write an equation to show how HC2O4− can act as a base with HS− acting as an acid.

Artyom0805 [142]

An acid donates $H^{+}$ ion in aqueous solution. A base accepts $H^{+}$ ion in aqueous solution.

The equation representing the acid base reaction of $HC_{2}O_{4}^{-}$ and $HS^{-}$ :

$HC_{2}O_{4}^{-}(aq) + HS^{-}(aq) ----> H_{2}C_{2}O_{4}(aq)+S^{2-}(aq)$

In the above reaction, as $HC_{2}O_{4}^{-}$ acts as a base it is accepting the hydrogen ion from $HS^{-}$ . Similarly, $HS^{-}$ donates its hydrogen ion to $HC_{2}O_{4}^{-}$ acting as an acid.

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2 years ago

a square boat made from iron has overall dimensions of 2.00 cm x 11.0 cm x 11.0 cm. it has a mass of 213 g. what is its density

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Volume:

2.00 x 11.0 x 11.0 => 242 cm³

mass : 213 g

D = m / V

D = 213 / 242

D = 0.880 g/cm³

Answer B

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2 years ago

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If 3.18 x 10^23 atoms of iron react with 67.2 L of chlorine gas at STP, what is the maximum

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84.34 grams of grams of iron (III) chloride that can be produced is maximum because Fe is the limiting reagent in this reaction and chlorine gas is excess reagent.

Explanation:

Balanced chemical equation:

2 Fe + 3 Cl2 → 2 FeCl3

DATA GIVEN:

iron = atoms

mass of chlorine gas = 67.2 liters

mass of FeCl3 = ?

number of moles of iron will be calculated as

number of moles = $\frac{total number of atoms}{Avagaro's number}$

number of moles = $\frac{3.18 x 10^23}{6.022x 10^23}$

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Putting the values in the equation:

n = $\frac{67200}{70.96}$ (atomic mass of chlorine gas = 70.96 grams/mole)

= 947.01 moles

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2 moles of Fe gives 2 moles of FeCl3

0.52 moles of Fe will give

$\frac{2}{2}$ = $\frac{x}{0.52}$

0.52 moles of FeCl3 is formed.

to convert it into grams:

mass = n X atomic mass

= 0.52 x 162.2 (atomic mass of FeCl3 is 162.2grams/mole)

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2 years ago

Describe the changes in properties (from metals to nonmetals or from nonmetals to metals) as we move (a) down a periodic group a

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Answer:

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