Idk why are they important?
Answer:
It helps identify trends and group elements with similar properties.
Explanation:
Arranging the elements according to the atomic mass wouldn't help us have groups and periods with predictable properties that we can have when arranging it according to atomic number. Don't forget that isotopes have different masses.
Answer:
0.96 M
Explanation:
M1 x V1 = M2 x V2
M1 = ?
V1 = 500 mL
M2 = 1.6 M
V2 = 300 mL
Plug in the variables:
(M1)x(500) = (1.6)x(300)
(M1)x(500) = 480
Divide both sides of equation by 500:
M1 = 0.96 M
Answer:
See explanation
Explanation:
We know that water begins to expand at 4°C. This is generally referred to as the anomalous behavior of water.
The implication of this is that ice has a greater volume than water. Thus ice is less dense than liquid water.
n-butyl alcohol has much less density than water. This accounts for the fact that water upon freezing breaks the bottle while n butyl alcholol leads to a container with concave walls.
Hence the density of ice is much higher than the density of n butyl alcohol.