Because sodium ions have only one positive electric charge units, but sulfur ions have two negative electric charges each.
Sodium (symbol, Na) has 1+ charge associated with it. Sulfur (symbol, S) has a 2- charge associated with it. So for every one molecule of sulfur, you need two molecules of sodium to balance out the charges so the ratio (or formula) would be: Na2S (s) The name of this ionic compound would be Sodium sulfide :)
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Sodium (Na) is a pure substance. Sodium chloride (NaCl) is a compound.
Sodium Sulfate Na has a charge of 1+ and Sulfate (SO4) has a charge of 3- So, in order for them to bond, you need to have 3 Sodium atoms for every 1 Sulfate molecules. Na3SO4
assuming you mean sodium plus iron II carbonate, the products are iron plus sodium carbonate. iron is a transitional metal which can make +2 or +3 ions, and YOU need to state that in your word equation. there no such thing as iron carbonate, but there is such thing as iron II carbonate and iron III carbonate
NaS2 is an unbalanced equation. It would need to be Na2S to be a balanced equation (two sodium, one sulfide). Na2S is Sodium Sulfide.
Sodium (symbol, Na) has 1+ charge associated with it. Sulfur (symbol, S) has a 2- charge associated with it. So for every one molecule of sulfur, you need two molecules of sodium to balance out the charges so the ratio (or formula) would be: Na2S (s) The name of this ionic compound would be Sodium sulfide :)
Sodium (Na) plus sulfur (S) creates sodium sulfide (Na2S). The reason is that Na gives up it's valence electron and S takes it. It takes 2 sodiums because S need TWO electrons to complete the octet. This forms the ionic compound sodium sulfide.
The balanced reaction should look like this: 2Ar(NO3)3 + 3Na2S Ar2S3 + 6Na(NO3) The molar weight of arsenic sulfide is 176.091 g/mol. 1 gram of arsenic sulfide therefore constitutes 0.006 mol. The stoichiometry of the above chemical reaction indicates that 2 moles of arsenic nitrate and 3 moles of sodium sulfide are required to make 1 mole of arsenic sulfide and 6 moles of sodium nitrate. These numbers are the ones that appear in front of the chemicals and are called the stoichiometric coefficients. You therefore need 0.012 mol of arsenic nitrate and 0.018 mol of sodium sulfide. The molar weights of these compounds are 132.959 g/mol and 78.043 g/mol respectively. Multiplication then gives you the answer which is 1.596 g of arsenic nitrate, and 1.405 g of sodium sulfide.
The sodium pump is actually known as the sodium potassium pump. Most cells in the body need to contain a higher concentration of potassium ions (K+) than their environment. They also need to contain a lower number of sodium ions (Na+) than their environment. To achieve this the cell constantly pumps sodium ions out and potassium ions in. This requires energy, and therefore is called active transport. This is carried out by transporter proteins in the plasma membrane, working with ATP which supplies the energy. The ATP changes the shape of the transporter protein, the shape change moves 3 sodium ions out of the cell and 2 potassium ions in. This is called the sodium potassium pump.
The sodium pump is actually known as the sodium potassium pump. Most cells in the body need to contain a higher concentration of potassium ions (K+) than their environment. They also need to contain a lower number of sodium ions (Na+) than their environment. To achieve this the cell constantly pumps sodium ions out and potassium ions in. This requires energy, and therefore is called active transport. This is carried out by transporter proteins in the plasma membrane, working with ATP which supplies the energy. The ATP changes the shape of the transporter protein, the shape change moves 3 sodium ions out of the cell and 2 potassium ions in. This is called the sodium potassium pump.
I think you're looking for three ... over the long run. But the trick is that K+ doesn't need to be pumped in. Membrane proteins act as variable sized pore in the membrane (channels) and the potassium flows in under electrostatic forces ... all the work is done pumping the Na+ out.
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The sodium-potassium pump functions much like a revolving door. Its main job is to keep sodium ions (NA+) outside of the cell and keep potassium ions (K+) inside of the cell. With the addition of energy from an ATP molecule, the sodium potassium pump moves three sodium ions out of the cell and moves two potassium ions into the cell with each turn. The goal of this process is to return, or keep, the cell at a resting state, or resting potential.
most water softeners work on an ion exchange principle. there is a medium that will preferentially exchange sodium ions for other ions associated with harness (calcium, magnesium, iron, etc.) Because the ions are exchanged on a 1:1 ration there is no change in the overall dissolved ion content. Sodium ions do not however contribute the problems commonly associated with hard water, so a higher sodium content is OK. As the sodium ions in the medium are depleted they need to be replaced. this is accomplished by flushing with a concentrated salt solution. At the high concentration of the salt solution the sodium ions in the medium is regenerated and the "bad" ions are flushed away. This is why you have to add salt to your water softener.
It depends what you mean by a nutrient. Sodium is the one which might not be considered as one, either because some people don't consider minerals as nutrients, or because we need sodium ions not sodium the element.
Pb10S10 The prefix deca in decasulfide means that there are 10 sulfide ions in the formula, each with a 2- charge. So the total negative charge is 10 x 2-, which equals 20-. To balance the total sulfide charge, you need enough lead II ions to equal 20+, so that means 10 lead II ions, which equals a charge of 20+. This is not really the correct way to name this compound. It should just simply be lead II sulfide, and the proper formula would be PbS, which, if you look at the ratio of lead to sulfide ions, which is 10:10, the formula for lead II decasulfide should be reduced to PbS.