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4 years ago

What is molecule?and what is the molecular formulae?

2 answers:

8 0

A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule. The empirical formula represents the simplest whole-integer ratio of atoms in a compound.

lidiya [134]4 years ago

8 0

Answer:

molecule is a group of atom .Molecular formula is the presentation of symbols of a molecules in a systematic way.

Explanation:

For eg ; O is the 1 atom of oxygen and HCl is the molecules of hydrochroric acid.

Examples of the molecular formula;

hydrogen + chroride =hydrogenchroride

= 2H + 2Cl =2HCl

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3 years ago

Caustic soda is 19.1 M NaOH and is diluted for household use. What is the household concentration if 10 mL of the concentrated s

olga nikolaevna [1]

Hello!

To calculate the household concentration of NaOH we need to use the dilution formula, clearing for M2, as you can see in the equation below:

$M1*V1=M2*V2 \\ \\ V2= \frac{M1*V1}{V2}$

Now, we input the values from the data we have onto this equation. M1=19,1 M; V1=10 mL; V2=400 mL, and solve the equation to get the result:

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So, the household concentration of NaOH will be 0,48 M

Have a nice day!

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4 years ago

What is molecule?and what is the molecular formulae?​

What is molecule?and what is the molecular formulae?