Comments for Molybdenum http://molybdenuminfo.com Answering your molybdenum questions Fri, 30 Jul 2010 20:23:03 +0000 http://wordpress.org/?v=2.6.3 Comment on How many moles are equal to 1.350E+23 atoms of molybdenum? by dohboy000 http://molybdenuminfo.com/2008/12/08/how-many-moles-are-equal-to-1350e23-atoms-of-molybdenum/#comment-43 dohboy000 Mon, 08 Dec 2008 23:09:21 +0000 http://molybdenuminfo.com/?p=46#comment-43 divide that number by avagodro's number to get the answer divide that number by avagodro’s number to get the answer

]]> Comment on Why is there over 200% DV of Molybdenum in my multivitamins? by chez_damascus http://molybdenuminfo.com/2008/11/30/why-is-there-over-200-dv-of-molybdenum-in-my-multivitamins/#comment-35 chez_damascus Tue, 02 Dec 2008 10:17:20 +0000 http://molybdenuminfo.com/?p=34#comment-35 The efficiency of absorption of nutritional supplement forms of molybdenum ranges from 88% to 93%, and the efficiency of absorption of molybdenum from foods ranges from about 57% to 88%. Remember the RDA is only the minimum requirement and the total amount at 200% is still small - only 150 MICROgrams. Molybdenum deficiencies are so rare that you wonder why it's there at all. The efficiency of absorption of nutritional supplement forms of molybdenum ranges from 88% to 93%, and the efficiency of absorption of molybdenum from foods ranges from about 57% to 88%.
Remember the RDA is only the minimum requirement and the total amount at 200% is still small - only 150 MICROgrams.
Molybdenum deficiencies are so rare that you wonder why it’s there at all.

]]> Comment on Why is there over 200% DV of Molybdenum in my multivitamins? by KIZIAH http://molybdenuminfo.com/2008/11/30/why-is-there-over-200-dv-of-molybdenum-in-my-multivitamins/#comment-34 KIZIAH Tue, 02 Dec 2008 09:00:53 +0000 http://molybdenuminfo.com/?p=34#comment-34 They put more than the MDR because your body is only capable of absorbing half of it. Half of it is excreted without being metabolized. They put more than the MDR because your body is only capable of absorbing half of it. Half of it is excreted without being metabolized.

]]> Comment on Why is there over 200% DV of Molybdenum in my multivitamins? by H W http://molybdenuminfo.com/2008/11/30/why-is-there-over-200-dv-of-molybdenum-in-my-multivitamins/#comment-33 H W Mon, 01 Dec 2008 05:14:53 +0000 http://molybdenuminfo.com/?p=34#comment-33 When the FDA sets the Recommended Daily Value, it is always the most conservative amount. In other words, the RDV is going to be the minimum required to avoid accute deficiency... it does not mean it is the optimal amount. That is why going (reasonably) over the RDV is not a problem. As for why the company chose to put in more Molybdenum than anything else, who knows? Maybe this trace element is usually low in people's diets, so they put in more if people are less likely to get it in their diet? When the FDA sets the Recommended Daily Value, it is always the most conservative amount.

In other words, the RDV is going to be the minimum required to avoid accute deficiency… it does not mean it is the optimal amount. That is why going (reasonably) over the RDV is not a problem.

As for why the company chose to put in more Molybdenum than anything else, who knows? Maybe this trace element is usually low in people’s diets, so they put in more if people are less likely to get it in their diet?

]]> Comment on does anybody know how to do atomic models? i have to do one for my chemistry class on Molybdenum.HELP PLEASE! by Dr.A http://molybdenuminfo.com/2008/11/22/does-anybody-know-how-to-do-atomic-models-i-have-to-do-one-for-my-chemistry-class-on-molybdenumhelp-please/#comment-79 Dr.A Mon, 24 Nov 2008 23:20:32 +0000 http://molybdenuminfo.com/?p=98#comment-79 Mo has 42 protons and 42 electrons There are many isotopes : 92 Mo has 50 neutrons 93 Mo has 51 neutrons 94 Mo has 52 neutrons 95 Mo has 53 neutrons 96 Mo has 54 neutrons 97 Mo has 55 neutrons 98 Mo has 56 neutrons 99 Mo has 57 neutrons 100 Mo ha 58 neutrons electronic configuration : 1s2 , 2s2 , 2p6, 3s2, 3p6 4s2, 3 d10, 4p6, 4d5, 5s1 Mo has 42 protons and 42 electrons
There are many isotopes :
92 Mo has 50 neutrons
93 Mo has 51 neutrons
94 Mo has 52 neutrons
95 Mo has 53 neutrons
96 Mo has 54 neutrons
97 Mo has 55 neutrons
98 Mo has 56 neutrons
99 Mo has 57 neutrons
100 Mo ha 58 neutrons
electronic configuration :
1s2 , 2s2 , 2p6, 3s2, 3p6 4s2, 3 d10, 4p6, 4d5, 5s1

]]> Comment on What is molybdenum used for? by TAPAN http://molybdenuminfo.com/2008/11/18/what-is-molybdenum-used-for/#comment-53 TAPAN Sat, 22 Nov 2008 06:53:08 +0000 http://molybdenuminfo.com/?p=62#comment-53 Molybdenum is used as an alloy addition to steels to induce specific mechanical properties. The most important property induced by molybdenum to steels is hardenability. Hardenability indicates the depth of hardness that can be achieved by standard hardening process. It also stabilizes the austenitic phase in steel. Molybdenum is used as an alloy addition to steels to induce specific mechanical properties. The most important property induced by molybdenum to steels is hardenability. Hardenability indicates the depth of hardness that can be achieved by standard hardening process. It also stabilizes the austenitic phase in steel.

]]> Comment on What is molybdenum used for? by gorcorps http://molybdenuminfo.com/2008/11/18/what-is-molybdenum-used-for/#comment-52 gorcorps Sat, 22 Nov 2008 05:10:57 +0000 http://molybdenuminfo.com/?p=62#comment-52 Molybdenum is often used for as a mechanical lubricant, similar to graphite. It also can be used in alloying purposed to increase the hardness/strength of certain steels and other alloys. Molybdenum is often used for as a mechanical lubricant, similar to graphite. It also can be used in alloying purposed to increase the hardness/strength of certain steels and other alloys.

]]> Comment on What is molybdenum used for? by ~VampirE!i! http://molybdenuminfo.com/2008/11/18/what-is-molybdenum-used-for/#comment-51 ~VampirE!i! Fri, 21 Nov 2008 20:19:02 +0000 http://molybdenuminfo.com/?p=62#comment-51 It is used in certain nickel-based alloys, such as the "Hastelloys (R)" which are heat-resistant and corrosion-resistant to chemical solutions. Molybdenum oxidizes at elevated temperatures. The metal has found recent application as electrodes for electrically heated glass furnaces and forehearths. The metal is also used in nuclear energy applications and for missile and aircraft parts. Molybdenum is valuable as a catalyst in the refining of petroleum. It has found application as a filament material in electronic and electrical applications. Molybdenum is an essential trace element in plant nutrition. Some lands are barren for lack of this element in the soil. Molybdenum sulfide is useful as a lubricant, especially at high temperatures where oils would decompose. It is used in certain nickel-based alloys, such as the “Hastelloys (R)” which are heat-resistant and corrosion-resistant to chemical solutions. Molybdenum oxidizes at elevated temperatures. The metal has found recent application as electrodes for electrically heated glass furnaces and forehearths. The metal is also used in nuclear energy applications and for missile and aircraft parts. Molybdenum is valuable as a catalyst in the refining of petroleum. It has found application as a filament material in electronic and electrical applications. Molybdenum is an essential trace element in plant nutrition. Some lands are barren for lack of this element in the soil. Molybdenum sulfide is useful as a lubricant, especially at high temperatures where oils would decompose.

]]> Comment on Chemistry Help — How many Mo atoms are present in 3 formulas of the compound, molybdenum(III) phosphate? by nagamani515 http://molybdenuminfo.com/2008/11/14/chemistry-help-how-many-mo-atoms-are-present-in-3-formulas-of-the-compound-molybdenumiii-phosphate/#comment-25 nagamani515 Tue, 18 Nov 2008 01:22:46 +0000 http://molybdenuminfo.com/?p=28#comment-25 I think the answer is 3. I say "think" because I'm a freshman chemistry student myself and was googling the phrase "molybdenum(III) phosphate" looking for help on a similar question when I came across your question. Here's why I think it's three: The formula for the compound is Mo(PO4) because it's Mo (III) and the charge of phosphate is a negative 3, so you don't have to worry about any subscripts. Which means that there is 1 atom of Mo in one formula, so in three formulas of it..there will be three. Also: I had the question "How many oxygen atoms are present in six formulas of the compond molybdenum(III) phosphate?" and the correct answer to that is 24, which makes sense using the method I explained above. Let me know if this helps! Good Luck... I think the answer is 3. I say “think” because I’m a freshman chemistry student myself and was googling the phrase “molybdenum(III) phosphate” looking for help on a similar question when I came across your question.

Here’s why I think it’s three:
The formula for the compound is Mo(PO4) because it’s Mo (III) and the charge of phosphate is a negative 3, so you don’t have to worry about any subscripts.
Which means that there is 1 atom of Mo in one formula, so in three formulas of it..there will be three.

Also:
I had the question “How many oxygen atoms are present in six formulas of the compond molybdenum(III) phosphate?” and the correct answer to that is 24, which makes sense using the method I explained above.

Let me know if this helps! Good Luck…

]]> Comment on How many valence electrons does Molybdenum (element #42) have? by stevieDB9 http://molybdenuminfo.com/2008/11/13/how-many-valence-electrons-does-molybdenum-element-42-have/#comment-15 stevieDB9 Mon, 17 Nov 2008 10:31:18 +0000 http://molybdenuminfo.com/?p=16#comment-15 electronic structure: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d4 Mo is a 4d element it has 6 valence electrons (5s2 and 4d4 are the 6 valence electrons) electronic structure:

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d4

Mo is a 4d element it has 6 valence electrons (5s2 and 4d4 are the 6 valence electrons)

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