chemistry
[Answered elsewhere]
Chemistry
Cm has 96 electrons. The previous noble gas is radon, Rn, with 86 electrons. It is a 7th row element and a member of the actinide series which starts with Ac, 3rd element on the 7th row and 7th element on the actinium series. The electron configuration is: [Rn] 7s^2, 6d^1, 5f^...
chemistry
Valence electrons are easier to remove (ionize) than electrons in the shell under the valence shell. A complete shell, closer to the nucleus is more difficult to disturb. After the valence electrons are removed, removal of an electron from the shell below requires much more en...
chemistry
NaOH + HClO4 --> H2O + NaClO4
Chemistry
The reaction is: Al2S3 + 6AgNO3(aq) --> 3Ag2S(s) + 2Al(NO3)3(aq) Find the formula mass (molar mass) of Al2S3. Divide 300.23 g by the formula mass to get moles of Al2S3. Moles of Ag2S = (__moles Al2S3)(3) Moles of Al(NO3)3 = (__moles Al2S3)(2)
Chemistry
The reaction written correctly is: 2NiO (s)--> 2Ni(s) + O2 (g) 1. Divide 25.67g NiO by the formula its mass to get the number of moles of NiO. 2. Since 2 moles NiO produce 1 mole O2, moles of O2 = ( ___mol NiO)(1/2) 3. Look up the vapor pressure of water, P(vapor), at 40.0 ...
Chemistry
Yes, since we have only two groups of valence electrons around the central atom, C: H : C : : : N :
chemistry
Most fuels are molecular (covalent) compounds as bobpursley pointed out. Ionic compounds do not burn. Note: Some ionic materials may decompose violently or support combustion (NaNO3, KClO4, etc.) Cesium sulfide is a stable compound that does not burn. Other flammable materials...
chemistry
The unbalanced chemical equation is: H2SO4 + Pb(OH)4 --> Pb(SO4)2 + H2O Balancing the SO4 groups (2 of them): 2H2SO4 + Pb(OH)4 --> Pb(SO4)2 + H2O Balancing the H's (8 of them): 2H2SO4 + Pb(OH)4 --> Pb(SO4)2 + 4H2O
chemistry
The phosphate formula depends on the oxidation state of the vanadium ion. For example, vanadium(III) phosphate would be VPO4 and vanadium(II) phosphate V3(PO4)2.
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