Some of the liquid wax changes into gas what is the name of this process

1 answer:

6 0

When a liquid changes into a gas vaporization has occurred. The process can either occur due to boiling or evaporation. Boiling occurs when the vapor pressure of the liquid is raised (by heating) to the point where it is equal to the atmospheric pressure.Jun 18, 2014

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What are the two major types of compounds? How do the bonds differ in each type?

Kaylis [27]

Answer:

1= Ionic compounds

2= Covalent compounds

Explanation:

Ionic bond:

It is the bond which is formed by the transfer of electron from one atom to the atom of another element.

Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

For example:

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion.

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.

The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial negative.

6 0

4 years ago

What is the mass of 2.35 x 10^21 moles of sodium

lora16 [44]

Answer:

5.41 x 10²² g

Explanation:

Data Given:

no. of moles of sodium = 2.35 x 10²¹ moles

mass of sodium = ?

Solution:

Formula used

no. of moles = mass in grams / molar mass

To find mass rearrange the above equation:

mass in grams = no. of moles x molar mass. . . . . . (1)

molar mass of Sodium (Na) = 23 g/mol

Put values in equation 1

mass in grams = 2.35 x 10²¹ moles x 23 g/mol

mass in grams = 5.41 x 10²² g

So,

mass of Sodium (Na) = 5.41 x 10²² g

8 0

4 years ago

A food chemist determines the concentration of acetic acid in a sample of apple vinegar by acid base titration. The density of t

Scilla [17]

Answer:

The concentration of acetic acid in the vinegar is 7,324 (%V/V)

Explanation:

The titration equation of acetic acid with NaOH is:

NaOH + CH₃COOH → CH₃COO⁻Na⁺ + H₂O

The moles required were:

1,024M×0,02500L = 0,02560 moles NaOH. These moles are equivalent (By the titration equation) to moles of CH₃COOH. As molar mass of CH₃COOH is 60,052g/mol, the mass in these moles of CH₃COOH is:

0,02560 moles CH₃COOH× $\frac{60,052g}{1mol}$ = 1,537g of CH₃COOH