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How would you describe the positive and negative impact that algae have have on humans?
Algae is a huge source of oxygen for our atmosphere as it produces more oxygen than trees do however they grow on the surface of water this can block sunlight...
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What is the charge (positive or negative) of transition metals?
The transitions metals have valance electrons in the s and d orbitals. The electrons in the s and d are not stable. The transitions gains stability by losing electron to...
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Is an ion an atom that has a net positive or negative electric charge?
I write species, because compound ions, i.e. $NO_3^-$, $NH_4^+$, $SO_4^(2-)$, as well as $Na^+$ or $Cl^-$ manifestly exist. As you know, in aqueous solution even $Na^+$ would not be a...
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Which of the following does not describe an ion: positive, negative, or neutral?
A neutral atom can lose an electron to become a cation: $MrarrM^(+) + e^-$ Or gain an electron to become an anion: $M+e^(-)rarrM^-$ So which is the neutral species? Note...
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The electron gain enthalpy of fluorine is less negative than that of chlorine while it is expected to be more negative . Explain ?
Reduction of a fluorine atom should release more energy, as the fluorine atom is smaller, and has a higher effective nuclear charge than chlorine. There are various definitions of...
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O negative ion is formed by release of energy and O 2- ion is formed by gain of energy.Explain?
Well, you're trying to stuff an electron into a region that is already electron-dense. So you're going to have to overcome electron repulsions in an already-negative ion, thereby requiring the...
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I need some help understanding how some ions have the same electronic arrangement as noble gasses? Like why does a Li+ ion has the same electron structure as helium or a Mg2+ ion has the same electron structure
as a Na+ ion and an O2- ion?
A completely filled outer electron shell is stable because it can not gain any more electrons, it is full. Being completely full it has no desire to lose electrons thereby...
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How is the oxidation of $"ferrous ion"$ to $"ferric ion"$ by $"permanganate ion"$ represented?
$"Oxidation reaction (i):"$ $Fe^(2+) rarr Fe^(3+) + e^-$ $"Reduction reaction (ii):"$ $MnO_4^(-) + 8H^(+) + 5e^(-) rarr Mn^(2+) + 4H_2O(l)$ For both $(i)$ and $(ii)$, $"charge is balanced"$ and $"mass...
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How to write and balance the equation for the reaction:
sodium fluoride plus copper(II) nitrate produces sodium nitrate plus copper(II) fluoride?
You need to determine the formulas first. sodium fluoride: $"NaF"$ copper(II) nitrate: $"Cu(NO"_3)"_2$ sodium nitrate: $"NaNO"_3$ copper(II) fluoride: $"CuF"_2$ $"NaF + Cu(NO"_3)_2"$$rarr$$"NaNO"_3 + "CuF"_2$ All of these are ionic. If...
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The combustion of a gaseous alkane produces 7 L of carbon dioxide plus water vapour. If the original volume of alkane plus oxygen was 6 L, what is the formula of the alkane?
The reaction used is a normal total oxidation of the hydrocarbon by oxygen: $C_nH_"2n+2"+[n+((n+1)/2)]O_2 -> nCo_2 + [n+1]H_2O$ The coefficient for the O_2 is coming from the addition of the...
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