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3 years ago

Water molecules are polar because the?

Chemistry

2 answers:

disa [49]3 years ago

6 0

Answer:

Water (H2O) is polar due to the bent shape of the molecule. The shape means most of the negative charge from the oxygen is one one side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule. This is an example of polar covalent chemical bonding.

Hope this helps!

user100 [1]3 years ago

4 0

Answer:

Its shape is bent, and so since the oxygen is electronegative, it pulls the electrons towards itself.

Explanation:

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A. Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculat

liraira [26]

Answer:

A)Mass of gallium plated out is 0.3440 grams

B) For 0.67 hours current of 5.79 A must to be applied to plate out 8.70 g of tin.

Explanation:

To calculate the total charge, we use the equation:

$C=I\times t$

where,

C = Charge

I = Current in time t (seconds)

To calculate the moles of electrons, we use the equation:

$\text{Moles of electrons}=\frac{C}{F}$

where,

F = Faraday's constant = 96500

A) The equation for the deposition of Ga(s) from Ga(III) solution follows:

$Ga^{3+}(aq.)+3e^-\rightarrow Ga(s)$

I = 0.790 A, t = 30.0 min = 1800 seconds

$C=I\times t$

$C=0.790 A\times 1800 s=1422 C$

Moles of electron transferred:

$=\frac{1422 C}{96500 F}=0.01474 mol$

Now, to calculate the moles of gallium, we use the equation:

$\text{Moles of Gallium}=\frac{\text{Moles of electrons}}{n}$

n = number of electrons transferred = 3

$\text{Moles of Gallium}=\frac{0.01474 mol}{3}=0.004913 mol$

Mass of 0.004913 moles of gallium = 0.004913 mol × 70 g/mol=0.3440 g

B) The equation for the deposition of Sn(s) from Sn(II) solution follows:

$Sn^{2+}(aq.)+2e^-\rightarrow Sn(s)$

Moles of tin = $\frac{8.70 g}{119 g/mol}=0.07311 mol$

n = number of electrons transferred = 2

$\text{Moles of tin}=\frac{\text{Moles of electrons}}{n}$

Moles of electron = $n\times \text{Moles of tin}$

$=2\times 0.07311 mol=0.14622 mol$

Charge transferred during time t :

$\text{Moles of electrons}=\frac{C}{F}$

$C=96500 F\times 0.14622 mol=14,110.23 C$

Current applied for t time = I = 5.79 A

$t=\frac{C}{I}=\frac{14,110.23 C}{5.79 A}=2,437 s=0.67 hrs$

For 0.67 hours current of 5.79 A must to be applied to plate out 8.70 g of tin.

5 0

4 years ago

1.) which of these is the balanced equation for this reaction?

horsena [70]

Answer:

1.D) CH4 + 2O2 → CO2 + 2H2O

2C)2,1,2

3.D)SIO2 + 4HF → SIF4 + 2H2O

4.D)2As + 6NaOH → 2Na3AsO3 + 3H2

5.C)SiCI4 + 2H2O → SiO2 + 4HCI

Explanation:

equal number of atoms of each elements in both the sides of the chemical equation is required to have an equation in balanced state.

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3 years ago

For eyes, the male monster's genotype was EE, and the female monster's genotype was ee. What kind of eyes can the baby monsters

attashe74 [19]

the answer that i would say is C

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3 years ago

A metamorphic rock can also be thought of as a rock that changes. What causes the rock to change?

Nana76 [90]

Answer:

its ethier b or c

Explanation:

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3 years ago

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pshichka [43]

Heat of vaporization (During which the temperature stays the same)

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3 years ago