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Precipitate potassium as potassium perchlorate (KClO4). Precipitate sodium as sodium bismuthate (NaBiO3).

NaCl.MgSO4.7H2O --> NaCl.MgSO4 + 7 H2O Weigh the sample --> mNaCl.MgSO4.7H2O. Heat in excess of 100oC. Reweigh --> mNaCl.MgSO4. mNaCl.MgSO4.7H2O - mNaCl.MgSO4 = mH2O. mH2O / FH2O = nH2O. nH2O / 7 = nMgSO4. nMgSO4 * FMgSO4 = mMgSO4. mMgSO4 / mNaCl.MgSO4.7H2O = % MgSO4. mH2O / mNaCl.MgSO4.7H2O =...

Sodium hydroxide is a strong base while ethanoic acid is a weak acid so the resulting solution is going to be weakly basic. Phenolphthalein has a transition range between 8.3–10.0 which is in the basic region.

That is absolute crap. Hydrogen chloride gas is soluble in water upto 720 g.L-1 C = (m)(V) / (F) C = (720)(1.000) / (36.46) C = 19.75 mol.L-1 pH = -log(19.75) pH = -1.30 The strongest known acid is Fluroantimonic acid which can have a pH as low as -25.

BeO + 2 H+ --> Be2+ + H2O BeO + H2O + 2 OH- --> [Be(OH)4]2-

http://community.boredofstudies.org/showthread.php?t=160822&highlight=radioactive+isotopes http://community.boredofstudies.org/showthread.php?t=51735&highlight=radioactive+isotopes http://community.boredofstudies.org/showthread.php?t=102643&highlight=radioactive+isotopes

I only had to see discovery.org in the URL to know that everything contained in the article is load of horse shit.

Are you saying you dont understand the difference between solids, liquids and gases?

No Mn(OH)3 is not a product that can be isolated. 1. Zn(s) ---> Zn2+(aq) + 2 e- 2. 2 NH4+(aq) + 2 e- ---> 2 NH3(g) + H2(g) 3. 2 MnO2(s) + H2(g) ---> Mn2O3(s) + H2O(l) Total Zn(s) + 2 MnO2(s) + 2 NH4Cl(aq) --> ZnCl2(aq) + Mn2O3(s) + 2 NH3(aq) + H2O Because Cl- is only a spectator it can be...

The overall chemical reaction for the Leclanche cell should be Zn(s) + 2 MnO₂(s) + 2 NH₄Cl(aq) --> ZnCl₂(aq) + Mn₂O₃(s) + 2 NH₃(aq) + H₂O The cathode reaction is wrong.

LDPE Low density polyethylene contains significant chain branching so the polymer chains cannot pack close together. This means that solvents can enter between the chains causing the plastic to swell. The loose chain packing has a number of results including a low maximum stable temperature of...

Because it is a double bond there is one single bond and one coordinate covalent single bond. Oxidising nitric acid (2 and 3) produces nitrogen dioxide (5). It can be seen that nitrogen contains a set of seven electrons as three bonds and an unpaired electron that causes dimerisation. The blue...

An EDTA titration is not an acid base titration rather it is a complexiometric titration. That is the complexation of a metal ion to a large organic molecule. In this case the large molecule is the hexadentate chelator EDTA. When titrating calcium with EDTA there is an indicator present. At...

They are uncharged atoms. Start with oxygen The bonds will break to form radicals The oxygen radical has 8 protons and also has 8 electrons (The two inner most electrons from shell 1s are not shown) so the radicals are uncharged. The reaction is O2 --> 2 O

The first picture is correct but you've labelled the paired electrons as unpaired. The unpaired electrons are used in bonding but the pairs are not. Where 1 shows the free atoms and 2 and 3 show the molecule. Your second picture shows an unpaired electron on nitrogen and a single electron...

Nitrogen dioxide can only be formed by the oxidation of nitric oxide, NO. The lewis structure for the free atoms has a nitrogen with five electrons of which three are unpaired and an oxygen with six electrons of which two are unpaired. When a molecule of NO is produced a double bond forms...

You missed a step CO2 (g) --> CO2 (aq) CO2 (aq) + H2O --> H2CO3 (aq) H2CO3 (aq) + H2O --> HCO3-(aq) + H3O+(aq)

The anode is oxidised so the anode becomes negatively charged. The cathode becomes positively charged, and cations in solution are reduced onto the cathode as metal. Now the anode solution is positively charged and the cathode solution is negatively charged. Nitrate anions from the salt bridge...

If the aluminium ions were to reduce the overall cell reaction would be: Al-->Al3+ + 3 e- +1.68 Al3+ + 3 e- --> Al -1.68 Of course each reaction would cancel the other out and the reaction will cease. --- The question does not specifically mention the sulfate anion. As the...

I would have said its disulfuric acid. Technically oleum is a group of compounds with the formula xSO3.H2O or H2SO4.ySO3