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4 years ago

9

How long does the chemical reactions take change air pollution to acid rain

1 answer:

Pepsi [2]4 years ago

6 0

3-5 minutes, I think

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Lisa studied the role of the stamen and stigma in the formation of seeds in flowering plants. She removed all the stamen from on

gulaghasi [49]

The Answer is Tweezers!

4 0

3 years ago

Read 2 more answers

What is hydroxide ion concentration, [OH-], in a 1.37 x 10^-5 M solution of barium hydroxide (Ba(OH)2)?

Olegator [25]

Ba(OH)₂ is a strong base, therefore completely ionises in the solution as follows
Ba(OH)₂ --> Ba²⁺ + 2OH⁻
1 mol of Ba(OH)₂ gives out 2 mol of OH⁻
therefore number of OH⁻ moles are twice the amount of Ba(OH)₂ moles in the solution
hence,
[OH⁻] = 2[Ba(OH)₂]
therefore hydroxide ion concentration = 2 x 1.37 x 10⁻⁵ M
[OH⁻] = 2.74 x 10⁻⁵ M
coefficient = 2.74
exponent = -5

7 0

3 years ago

Products of a neutralization reaction

Lemur [1.5K]

Neutralization is the reaction of an acid and a base which form water and a salt

7 0

3 years ago

What is the activity coefficient of H in a solution containing 0.073 M HCl and 0.0090 M Ca(ClO4)2? A table of activity coefficie

yarga [219]

Answer:

The value is $pH = 1.22$

Explanation:

From the question we are told that

The concentration of $H^{+}$ is $[H^{+}] = 0.073 \ M$

The concentration of $Cl^{-}$ is $[Cl{+}] = 0.073 \ M$

The concentration of $Ca^{+}$ is $[Ca{2+}] = 0.0090 \ M$

The concentration of $ClO^{-}$ is $[ClO^{-}] = 2 *0.0090 = 0.018$

Generally the log of the activity coefficient is mathematically represented as

$log \ \gamma__{H^+}} = \frac{-0.5z^2 * \sqrt{\mu} }{1 + (\alpha * \frac{\sqrt{\mu}}{305} )}$

Here z is the charge which for $H^{+}$ is +1

$\alpha$ is the size which for $H^{+}$ is $900pm = 900*10^{-12} \ m$

$\mu$ is the ionic strength which is mathematically represented as

$\mu = \frac{1}{2} * \{ 0.073* (+1)^2 +0.073 * (-1)^2+0.0090 * (+2)^2+ 0.018* (-1)^2 \}$

=> $\mu = 0.1$

So

$log \ \gamma__{H^+}} = \frac{-0.5(+1)^2 * \sqrt{0.1} }{1 + (900*10^{-12} * \frac{\sqrt{0.1}}{305} )}$

=> $log \ \gamma_{H^+} = -0.083$

=> $\gamma__{H^+}} = antilog(-0.083)$

=> $\gamma__{H^+}} =0.82$

Generally the pH is mathematically represented as

$pH = -log [H^{+}] * \gamma__{H^{+}}$

$pH = -log 0.073 * 0.82$

=> $pH = 1.22$

3 0

3 years ago

Arrange the elements in order of increasing atomic radius.Use the periodic table to help you

MAXImum [283]

Answer:

S, F, Mg, Ba.

Sulfer(S) is 100pm, Fluorine(F) is 147pm, Magnesium(Mg) is 173pm, and Baruim(Ba) is 268pm.

Hope this helps <3

4 0

3 years ago