An alternative method by which we can overcome this global issue is by harnessing Solar energy.
Discussion:
Fossil fuels cause environmental pollution. This is because they are organic compounds and on combustion, they release air pollutants such as, Carbon monoxide.
As a panacea, the use of solar panels for harnessing Solar energy in a bid to replace energy from fossil fuels will prove to be am effective method by which we can overcome the global issue of pollution caused by burning of fossil fuels.
Solar energy is a clean source of energy as there's no release of harmful air pollutants.
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Answer:
D. 76%
Explanation:
Percent yield=actual/theoretical * 100
38/50 * 100 = 76%
<u>Answer:</u> The net ionic equation is written below.
<u>Explanation:</u>
Net ionic equation of any reaction does not include any spectator ions.
Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.
The chemical equation for the reaction of ammonium carbonate and lead (II) nitrate is given as:
![(NH_4)_2CO_3(aq.)+Pb(NO_3)_2(aq.)\rightarrow 2NH_4NO_3(aq.)+PbCO_3(s)](https://tex.z-dn.net/?f=%28NH_4%29_2CO_3%28aq.%29%2BPb%28NO_3%29_2%28aq.%29%5Crightarrow%202NH_4NO_3%28aq.%29%2BPbCO_3%28s%29)
Ionic form of the above equation follows:
![2NH_4^{+}(aq.)+CO_3^{2-}(aq.)+Pb^{2+}(aq.)+2NO_3^{-}(aq.)\rightarrow PbCO_3(s)+2NH_4^+(aq.)+2NO_3^-(aq.)](https://tex.z-dn.net/?f=2NH_4%5E%7B%2B%7D%28aq.%29%2BCO_3%5E%7B2-%7D%28aq.%29%2BPb%5E%7B2%2B%7D%28aq.%29%2B2NO_3%5E%7B-%7D%28aq.%29%5Crightarrow%20PbCO_3%28s%29%2B2NH_4%5E%2B%28aq.%29%2B2NO_3%5E-%28aq.%29)
As, ammonium and nitrate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.
The net ionic equation for the above reaction follows:
![Pb^{2+}(aq.)+CO_3^{2-}(aq.)\rightarrow PbCO_3(s)](https://tex.z-dn.net/?f=Pb%5E%7B2%2B%7D%28aq.%29%2BCO_3%5E%7B2-%7D%28aq.%29%5Crightarrow%20PbCO_3%28s%29)
Hence, the net ionic equation is written above.
Answer:
There are several different types of tools you could encounter, including project management software, note-taking programs, journals, and day planners. Organization management tools help in sorting out one’s daily responsibilities and being more efficient with time: calendars, to-do lists, mind maps, document storage clouds.
Explanation:
what i know:) hope it helps
The jewelry is submerged in the graduated cylinder, the total volume increased to 61.2 ml mass of the water in the graduated cylinder is 128.5 gram.
<h3>What is density?</h3>
Density is a amount of a substance per unit area of the volume of the mass and it is the ratio of mass and the volume unit is centimeter cube.
The density of the substance = mass / volume
substituting the value in the equation,
Density = 132.6 / 48.6 = 2.1 centimeter cube.
mass = density volume
mass = 2.1 61.2
mass = 128.5 gram.
Therefore, mass of the water in the graduated cylinder is 128.5 gram if jewelry is submerged in the graduated cylinder, the total volume increased to 61.2 ml.
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