Answer:
Every 15 degrees is an hour
Explanation:
What is the time difference in mean solar time between 30° N 75° W and 30° N 90° W?
There’s no one around and the breeze from the Ocean makes it cool
Answer: Volume of 1g of pure gold 
Given;
Density of a pure gold=19.3 
Mass of a pure gold =1g
To find:
Volume of 1g of pure gold
Solution:
According to the formula,
Density= Mass/Volume

Where
=density of pure gold
m=mass of pure gold
v=volume of pure gold
From the above equation volume can be calculated as

Substitute the values of mass and density value in the above equation


Result:
Thus the volume of 1g of pure gold is 
Answer: 0.040 mol/l
Explanation: Molarity c = n/V (Concentration)
c = 0.060 mol / 1,5 l = 0,040 mol/l
Answer:
By atomic number?
Explanation:
fingers crossed its right :/