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2 years ago

How many grams are in 1.5 moles of LiF? solve for unknown

Chemistry

1 answer:

Effectus [21]2 years ago

7 0

Answer:

The gram formula mass is the sum of the gram atomic masses of the atoms that make up a chemical formula. For lithium fluoride this works out to be 7g + 19g = 26g. Hence the mass of 1 mole of LiF is 26g; and the mass of 1.5 moles of LiF must be 1.5 × 26g = 39g.

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Consider the following generic reaction for which Kp = 5.51 × 105 at 25°C:

lora16 [44]

Answer:

$K_c=1.35\times 10^7$

Explanation:

The relation between Kp and Kc is given below:

$K_p= K_c\times (RT)^{\Delta n}$

Where,

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For the first equilibrium reaction:

$2R_{(g)}+A_{(g)}\rightleftharpoons2Z_{(g)}$

Given: Kp = $5.51\times 10^5$

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The conversion of T( °C) to T(K) is shown below:

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T = (25 + 273.15) K = 298.15 K

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Thus, Kc is:

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