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2 years ago

There are molecules of carbon dioxide (CO2) in 102.5 grams.

Chemistry

1 answer:

Gekata [30.6K]2 years ago

7 0

Answer:

1.403x10²⁴ molecules

Explanation:

In order to calculate how many molecules of CO₂ are there in 102.5 g of the compound, we first convert grams to moles using its molar mass:

102.5 g ÷ 44 g/mol = 2.330 mol CO₂

Now we convert moles into molecules using Avogadro's number:

2.330 mol * 6.023x10²³ molecules/mol = 1.403x10²⁴ molecules

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Answer:

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Explanation:

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2 years ago

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A positron is usually ejected in the process together with an anti-neutrino to balance the spins.

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2 years ago

The concentration of a trace mineral is found to be 2.53 PPB in an aqueous solution. what volume of solution contains 2.53 g of

FinnZ [79.3K]

Answer:

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1 year ago

Does adding 1 mol of NaCl to 1 kg of water lower the vapor pressure of water to the same extent, a lesser extent, or a greater e

igor_vitrenko [27]

Answer:

Adding 1 mol of NaCl to 1 kg of water lower the vapor pressure of water to the same extent by adding 1 mol of $C_06H_{12}O_6$ to 1 kg of water.

Explanation:

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$\frac{p_o-p}{p_o}=\frac{n_1}{n_1+n_2}$

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2) Moles of sucrose , $n_1=1mol$

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Vapor pressure of the pure solvent that is water = $p_o=17.5 Torr$

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$\frac{17.5 Torr-p}{17.5 Torr}=\frac{1 mol}{1 mol+55.55 mol}$

$p'=17.19 Torr$

The vapor pressure for the glucose solution at 17.19 Torr.

p = p' = 17.19 Torr

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2 years ago

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Alik [6]

Answer:

Explanation:

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So simply 11+12 =23

6 0

1 year ago