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3 years ago

Baby Mice

Chemistry

1 answer:

alexgriva [62]3 years ago

6 0

Answer:

I would say for #1 Fiona and for #2 sexual

Explanation:

Please give brailiest

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Where do producers get matter and energy to live and grow ?

bixtya [17]

Answer:c

Explanation:

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3 years ago

Solutions of Cu2+ turn blue litmus red because of the equilibrium: Cu(H2O)62+(aq) + H2O(l) ↔ Cu(H2O)5(OH)+(aq) + H3O+(aq) for wh

Elanso [62]

Answer: The pH of 0.10 M $Cu(NO_{3})_{2}(aq)$ is 4.49.

Explanation:

Given: Initial concentration of $Cu(H_{2}O)^{2+}_{6}$ = 0.10 M

$K_{a} = 1.0 \times 10^{-8}$

Let us assume that amount of $Cu(H_{2}O)^{2+}_{6}$ dissociates is x. So, ICE table for dissociation of $Cu(H_{2}O)^{2+}_{6}$ is as follows.

$Cu(H_{2}O)^{2+}_{6} \rightleftharpoons [Cu(H_{2}O)_{5}(OH)]^{+} + H_{3}O^{+}$

Initial: 0.10 M 0 0

Change: -x +x +x

Equilibrium: (0.10 - x) M x x

As the value of $K_{a}$ is very small. So, it is assumed that the compound will dissociate very less. Hence, x << 0.10 M.

And, (0.10 - x) will be approximately equal to 0.10 M.

The expression for $K_{a}$ value is as follows.

$K_{a} = \frac{[Cu(H_{2}O)^{2+}_{6}][H_{3}O^{+}]}{[Cu(H_{2}O)^{2+}_{6}]}\\1.0 \times 10^{-8} = \frac{x \times x}{0.10}\\x = 3.2 \times 10^{-5}$

Hence, $[H_{3}O^{+}] = 3.2 \times 10^{-5}$

Formula to calculate pH is as follows.

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

Substitute the values into above formula as follows.

$pH = -log [H^{+}]\\= - log (3.2 \times 10^{-5})\\= 4.49$

Thus, we can conclude that the pH of 0.10 M $Cu(NO_{3})_{2}(aq)$ is 4.49.

8 0

3 years ago

Which specific gas is most abundant in earth's atmosphere?

elena-14-01-66 [18.8K]

Nitrogen is 78.08% of the air is fills the earth's atmosphere.

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3 years ago

Read 2 more answers

How many moles of nitrate are dissolved in water if 6.15 mole strontium nitrate dissolve?

pashok25 [27]

The number of moles of nitrate dissolved in water if 6.15 mole of strontium nitrate is : 12.3 moles

<u>Given data :</u>

Moles of strontium nitrate = 6.15 moles

<h3>Ionization of Strontium Nitrate </h3>

When strontium nitrate ( $Sr(NO_{3} )_{2}$ ) is placed in water it will dissociates into its ions because strontium nitrate is an ionic compound.

Next step : Represent the ionization of strontium nitrate

$Sr ( NO_{3} )_{2} (aq) --- > Sr^{2+} (aq) + 2NO_{3} ^{-} (aq)$

From the Stoichiometry of the chemical reaction

I mole of strontium nitrate = 2 moles of Nitrate ions

6.15 mole of strontium nitrate = 2 * 6.15

= 12.3 moles of Nitrate

Hence we can conclude that The number of moles of nitrate dissolved in water if 6.15 mole of strontium nitrate is : 12.3 moles.

Learn more about Stoichiometry of chemical reaction : brainly.com/question/27058367

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3 years ago

Which one of these 3 ( beta, alpha, gamma) is the strongest and which is the weakest?

prisoha [69]

Answer: beta, gamma, alpha

Explanation: Beta is weakest gamma is middle alpha is strongest

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3 years ago