Answer:
Nitrogen
Explanation:
Nitrogen has 5 Valence Electrons.
And its atomic mass is also less than Bismuth.
There are other elements in the 5th row but this one has the lowest atomic mass compared to the others.
Answer:
Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
Explanation:
a) Carbon and oxygen are chemically bonded in carbon dioxide.
The elements lose their individual identities in CO₂, and they always combine o the proportion C:O = 1:2.
You cannot separate the elements from each other by physical means.
Answer:
a)4.40 x 10^-3 M/s
b) 8.80 x 10^-3 M/s
Explanation:
Given the reaction equation;
H2O2 (aq) + 3I- (aq) + 2H+ --------> I3- (aq) + 2H2O (l)
We can now write;
a) Rate = -Δ[I-]/3Δt
- (0.868 M - 1.000 M)/ 3 (10.0 s - 0 s)
= 4.40 x 10^-3 M/s
Similarly;
b) Rate = -Δ[H+]/2Δt
- (0.868 M - 1.000 M)/ 3 (10.0 s - 0 s)
(4.40 x 10^-3 m/s) x 2
= 8.80 x 10^-3 M/s
C. Solid
The particles in a solid are held together by strong attractive forces so they can't move freely. However in gases and liquids the attractive force is weaker to they can move more easily.