Chemistry, 15.11.2019 06:31 july00

Sodium hydroxide, naoh, is a strong base that is used in industrial synthesis and processes such as making paper.
what is the mass of 2.70 ×1022 formula units of naoh (molar mass = 40.0 g/mol)?

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Answer from: Robyn32

1.792 g

Explanation:

We are given;

Formula units of NaOH as 2.70 ×10^22 Molar mass of NaOH as 40.0 g/mol

We are required to determine the mass of NaOH in the given formula units;

Step 1: Determine the number of moles of NaOHWe need to know that 1 mole of a compound contains formula units equivalent to the Avogadro's number, 6.022 × 10^23.Therefore;

1 mole of NaOH = 6.022 × 10^23 formula units

Thus;

Moles of NaOH = 2.70 ×10^22 ÷ 6.022 × 10^23 formula units/mol

= 0.0448 moles

Step 2: Determine the mass of NaOH

Moles = mass ÷ Molar mass

Therefore,

Mass = Moles × Molar mass

= 0.0448 moles × 40.0 g/mol

= 1.792 g

Thus, the mass of 2.70 × 10^22 formula units of NaOH is 1.792 g

Answer from: Quest

chemical energy is stored in the chemical bonds of atoms and molecules. it can only be seen when it is released in a chemical reaction. when chemical energy is released, the substance from which the energy came is often changed into an entirely different substance.

this chemical reaction releases energy in the form of light and heat. chemical energy is the potential energy stored in the arrangement of atoms within molecules. breaking chemical bonds requires energy, while forming new chemical bonds releases energy.

the atp molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. in this form,energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.

Answer from: Quest

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$^{222}_{86} rn+ ^{4}_{2} he$ →

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Sodium hydroxide, naoh, is a strong base that is used in industrial synthesis and processes such as...

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