Hello, and this is my own words Periodic trends are specific patterns in the properties of chemical elements that are revealed in the periodic table of elements. Major periodic trends include electronegativity, ionization energy, electron affinity, atomic radii, ionic radius, metallic character, and chemical reactivity.
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Answer:
1.016 seconds
Explanation:
Let's bring out the parameters we were given in the question;
Rate constant k = 0.710 s^-1
Initial Concentration [A] = 0.820 M
Final concentration [A]o = 0.290 M
Time t = ?
Formular relating these parameters is given as;
ln[A] = ln[A]o − kt
Making t subject of interest, we have;
ln[A] - ln[A]o = -kt
kt = ln[A]o - ln[A]
t = (ln[A]o - ln[A]) / k
Substituting the values, we have;
t = ( ln(0.820) - ln(0.290) ) / 0.710
t = 0.7217 / 0.710
t = 1.016 seconds
Some of the negative consequences of cobalt mining are pollution and child trafficking.
<h3>Effects of cobalt mining</h3>
Many young children are made to work in mines generally either due to continued struggle for survival or forced into it by child traffickers.
Apart from that, cobalt mining causes pollution in the environment. Inhalation of dust containing cobalt causes a host of health issues such as lung cancer and damage to human skin.
Other effects include soil degradation and pollution, water pollution due to mine run-offs, etc.
More on the effects of mining can be found here: brainly.com/question/2365629
Answer:
1. The body's immense blood supply (when blood vessels dilate or become larger heat loss occurs) When the blood vessels constrict it holds in heat
2. The skins blood supply also helps maintain body temperature (helps maintain homeostasis which is the "normal" state of our body)
3. Humidity in the air effects thermoregulation (heat regulation in the body) by limiting sweat evaporation (usually sweat evaporates into the environment when the humidity is low because the air has low "water levels" per say while you have high "water levels" because of your sweat