3 years ago

Plzz help meee asapp

Chemistry

1 answer:

Mama L [17]3 years ago

3 0

5. B
6. C
7. C

hope this help

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(a) The original value of the reaction quotient, Qc, for the reaction of H2(g) and I2(g) to form HI(g) (before any reactions tak

Taya2010 [7]

Answer:

Here's what I get

Explanation:

Assume the initial concentrations of H₂ and I₂ are 0.030 and 0.015 mol·L⁻¹, respectively.

We must calculate the initial concentration of HI.

1. We will need a chemical equation with concentrations, so let's gather all the information in one place.

H₂ + I₂ ⇌ 2HI

I/mol·L⁻¹: 0.30 0.15 x

2. Calculate the concentration of HI

$Q_{\text{c}} = \dfrac{\text{[HI]}^{2}} {\text{[H$_{2}$][I$_{2}$]}} =\dfrac{x^{2}}{0.30 \times 0.15} = 5.56\\\\x^{2} = 0.30 \times 0.15 \times 5.56 = 0.250\\x = \sqrt{0.250} = \textbf{0.50 mol/L}\\\text{The initial concentration of HI is $\large \boxed{\textbf{0.50 mol/L}}$}$

3. Plot the initial points

The graph below shows the initial concentrations plotted on the vertical axis.

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Element X has a charge of +2 and Element Y has a charge of -1.

bekas [8.4K]

the chemical equation will be XY2

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true or false The atoms in Container A are hydrogen atoms. Hydrogen is a gas. The atoms placed in containers E, F, G, and H will

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Answer:

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Lets write the formula, then start to determine!

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What is the volume of 35.0 g of propylene glycol if the density of propylene glycol is 1.036 g/ cm3?

Len [333]

Mass = 35.0 g

density = 1.036 g/cm³

volume = ?

therefore:

D = m / V

1.036 = 35.0 / V

V = 35.0 / 1.036

V = 33.784 cm³

answer D

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3 years ago