It is because black absorbs heat whereas white reflects heat
Answer:
They are inversely related.
Explanation:
- Molarity is the no. of moles of solute per 1.0 L of the solution.
<em>M = (mass/molar mass)solute (1000/V) </em>
M is the molarity.
V is the volume of the solution.
<em>M ∝ 1/V.</em>
<em>∴ They are inversely related.
</em>
The temperature is different because of the molecular make up of sand and water. Sand's atoms are much closer together because it is a solid so they bump into each other causing the substance, in this case sand, to heat up and stay heated longer. Water's atoms are much more spread out than that of sand so it takes longer for it to warm up because the atoms are not bumping into each other as much.
The ppm is denifite by how many parts of the solute is present in a one million parts of the solution. Remembring that the solute should be in "mg" and the solutions shoud be in "kg".
Number 3If you notice any mistake in my english, please let me know, because i am not native.
Answer:
Oxygen is more electronegative.
Explanation:
Electronegativity:
Electronegativity of an atom is its tendency to attract the electron to wards it self.
Br = 2.98
O = 3.44
Oxygen is more electronegative than bromine thus it attract electron more strongly towards itself as compared to bromine.
when an more electronegative atom combine with less electroneagtive atom partial charges are created upon them. e.g
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 positive.
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.