Answer: Homogeneous mixtures : food coloring dissolved in water, a cup of tea and sugar :
Heterogeneous mixtures : food coloring dissolved in water, a cup of tea and sugar
Explanation:
Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present.
Homogeneous mixtures : It is a mixture that has uniform composition throughout the solution and the particle size or shapes are not different.
There is no physical boundary between the dispersed phase and dispersion medium. Example: peanuts and almonds mixed together in a bowl, a bucket full of sand and gravel
Heterogeneous mixtures : It is a mixture that has non-uniform composition throughout the solution and the particle size or shapes are also different.
There is a physical boundary between the dispersed phase and dispersion medium. Example: food coloring dissolved in water, a cup of tea and sugar
Answer A)
1. Ne will have 10 protons and the charge of protons is positive.
2. Ne will have 10 neutrons and there is no charge on the neutrons.
3. Ne has 10 electrons and the electrons have a negative charge.
4. Atomic number of Ne is 10.
5. Atomic mass of Ne is 20.1797 u.
6. Name of the atom is Neon.
Answer B)
1. Hydrogen has no neutrons.
2. Atomic mass of carbon is 12 u.
3. Calcium has 20 protons.
4. Fluorine has 10 neutrons.
5. Potassium has 20 neutrons.
6. Oxygen has 8 protons.
Protons identifies an atom.
First you calculate the concentration of [OH⁻] in <span>solution :
POH = - log [ OH</span>⁻]
POH = - log [ 0.027 ]
POH = 1.56
PH + POH = 14
PH + 1.56 = 14
PH = 14 - 1.56
PH = 12.44
hope this helps!