Sodium hydroxide, naoh , is a strong base that is used im industrial synthesis and processes such as making paper. what is the mass of 2.90*10^22

1.926 g of NaOH

Concept tested: Mole and Avogadro's number

Therefore;

In this case; Our compound is NaOH

Therefore;

1 mole of NaOH contains 6.022 × 10^23 molecules

But; Molar mass of NaOH is 40.0 g/mol

Therefore;

With this we can calculate the mass of 2.90 × 10^22 molecules

Therefore;

Mass of NaOH =(2.90 × 10^22 molecules ÷ 6.022 × 10^23 molecules)40g

                        = 1.9263 g

                        = 1.926 g NaOH

Thus, the mass of NaOH is 1.926 g

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.