Answer:
the 7 question answer is c the 24 question answer is b
Explanation:
Environmental issues such as climate change, water pollution and
renewable energy make the news headlines and have become increasingly
important in every day life. Many people perceive chemistry and the
chemical industry as harmful to the environment. Research in biological sciences and chemistry has revealed that
industrial processes in chemistry could play a role
in developing solutions to environmental problems such as climate
change.
<u>Answer:</u> Gas
<u>Reasoning:</u> Solid particles are all completely still or move very slowly.
Water particles move at a average speed.
Plasma particles are negative and positive meaning they stick
Answer:
heat increase, pressue loss, altitude gain,
Explanation:
Calcium chloride (CaCl2) is a salt which dissociates when
dissolved in water. Assuming that the dissociation is complete (100 %), then
the half reaction for this would be:
<span>CaCl2 ---> Ca2+
+ 2 Cl-</span>
We can see that in 1 mole of CaCl2 salt, 1 mole of Ca2+
ion and 2 moles of Cl- ion is created. Therefore there are 3 moles of ion per 1
mole of CaCl2. Using this ratio, the total number of moles of ions in the
solution is:
Total number of ions = 0.5 mol CaCl2 * (3 moles ion / 1
mol CaCl2)
<span>Total number of ions = 1.5 moles ion</span>
