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3 years ago

If JM = 5x - 6 and LM = 2x - 6 , which expression represents JL ?

Chemistry

1 answer:

Mrrafil [7]3 years ago

3 0

Given:

JM = 5x-6

LM = 2x-6

To determine:

the expression for JL

Explanation:

JL = JM - LM = 5x-6 -(2x-6) = 3x

Ans: JL = 3x

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How many grams of a stock solution that is 92.5 percent H2SO4 by mass would be needed to make 250 grams of a 35.0 percent by mas

IrinaVladis [17]

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We can use a version of the dilution formula

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where

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4 years ago

A 3.50 g sample of an unknown compound containing only C , H , and O combusts in an oxygen‑rich environment. When the products h

statuscvo [17]

Explanation:

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= $\frac{1 atm \times 4.41 ml}{0.0821 Latm/mol K \times 293 K}$ (as 1 bar = 1 atm (approx))

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As, Density = $\frac{mass}{volume}$

Hence, mass of water will be as follows.

Density = $\frac{mass}{volume}$

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Similarly, calculate the moles of water as follows.

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Therefore, mass of oxygen will be as follows.

Mass of O = mass of sample - (mass of C + mass of H)

= 3.50 g - (2.19 g + 0.36 g)

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No. of moles = $\frac{mass}{\text{molar mass}}$

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Sphinxa [80]

Answer:

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