Chemistry, 09.09.2020 01:01 shiba8667

A 50.0 mL Volumetric flask filled with aqueous solution of hydrogen peroxide has a total mass of 88.5 g. The mass of the volumetric flask is 16.5 g. What is the density of the aqueous solution of hydrogen peroxide ?

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Answer from: tainniyarowe

1.44 g/mL

Explanation:

From the question given above, the following data were obtained:

Volume (V) of H2O2 = 50 mL.

Mass of flask + H2O2 = 88.5 g.

Mass of flask = 16.5 g.

Density (D) =?

Next, we shall determine the mass of the hydrogen peroxide (H2O2).

This can be obtained as follow:

Mass of flask + H2O2 = 88.5 g.

Mass of flask = 16.5 g.

Mass of H2O2 =?

Mass of H2O2 = (Mass of flask + H2O2) – (Mass of flask)

Mass of H2O2 = 88.5 – 16.5

Mass of H2O2 = 72 g

Finally, we shall determine the density of the hydrogen peroxide (H2O2) as follow:

Volume (V) of H2O2 = 50 mL.

Mass (m) of H2O2 = 72 g.

Density (D) =?

Density (D) = mass (m) /volume (V)

D = m/V

D = 72 g / 50 mL

D = 1.44 g/mL

Therefore, the density of the hydrogen peroxide (H2O2) is 1.44 g/mL.

Answer from: Quest

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

Answer from: Quest

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation:

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A 50.0 mL Volumetric flask filled with aqueous solution of hydrogen peroxide has a total mass of 88....

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