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3 years ago

Explain why atoms increase in size when the atom gains electrons.

1 answer:

7 0

Adding electrons creates an ion that is larger then the neutral atom; removing electrons produces an ion that is smaller then the neutral atom. When electrons are added, mutual repulsions push them apart and they occupy a larger volume so the ion increases in size.

Hope it helps

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What is the chemical formula for carbon tetrafluoride?

Degger [83]

The answer is C. CF4

5 0

3 years ago

Read 2 more answers

For each of the esters provided, identify the alcohol and the carboxylic acid that reacted.

Veronika [31]

Answer:

52. The alcohol USED => methanol, CH3OH

The carboxylic acid USED => propanoic acid, CH3CH2COOH.

53. The alcohol USED => Ethanol, CH2CH3OH

The carboxylic acid USED => Formic acid, HCOOH.

Explanation:

52. To obtain Methyl propanoate, CH3CH2COOCH3, we simply react propanoic, CH3CH2COOH and methanol, CH3OH together as shown below:

CH3CH2COOH + CH3OH —> CH3CH2COOCH3 + H2O

The alcohol used: methanol, CH3OH

The carboxylic acid used: propanoic acid, CH3CH2COOH.

53. To obtain Ethyl methanoate, HCOOCH2CH3, we simply react

Formic acid, HCOOH and ethanol, CH3CH2OH together as show below:

HCOOH + CH3CH2OH —> HCOOCH2CH3 + H2O

The alcohol USED => Ethanol, CH2CH3OH

The carboxylic acid USED => Formic acid, HCOOH.

7 0

3 years ago

What is the reduction half-reaction for the equation below?

Katen [24]

Answer:

$MnO_4^-+8H^++5e^-\rightarrow Mn^{2+}+4H_2O$

Explanation:

Hello there!

In this case, since redox reactions are characterized by the presence of a reduction reaction, whereby the oxidation of the element decreases, and an oxidation reaction whereby the oxidation of the element increases.

In such a way, for the given chemical equation, we can see Fe is increasing its oxidation state from 2+ to 3+, which means it is oxidized. On the flip side, Mn is being reduced from 7+ (MnO₄⁻) to 2+ and this, the reduction half-reaction is:

$MnO_4^-+8H^++5e^-\rightarrow Mn^{2+}+4H_2O$

Whereas five electrons are carried.

Regards!

3 0

3 years ago

Write the formulas of the compounds formed by NH4+ with the following anions: NO3−, HCO3−, SO32−, PO43−. Use the given order of

tekilochka [14]

NH₄NO₃
NH₄HCO₃
(NH₄)₂SO₃
(NH₄)₃PO₄

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4 years ago

LOSPICNOMEWTROS SON INSTRUMENTOS EMPLEADOS PARA CALCULAR DENSIDADES DE SUSTANCIAS LIQUIDAS. SE REALIZO UN EXPERIMENTO PARA DETER

Natasha_Volkova [10]

Answer:

0.66g/mL

Explanation:

La densidad es una propiedad de la materia definida como la masa de una sustancia en un determinado volumen.

En este problema, podemos hallar la densidad sabiendo que la diferencia de masas del pic vacío y el pic lleno es la masa de la solución y que el volumen que ocupa es de 25mL:

<em>Masa solución:</em>

25g - 8.5g = 16.5g

Así, la densidad será:

16.5g / 25mL =

3 0

3 years ago