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What is the chemical symbol or formula foe nitrate

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Nitrate is a polyatomic ion with the molecular formula NO3? and a molecular mass of 62.0049 g/mol.

Posted on Mar 30, 2015


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I have a bottle of potassium nitrate that expired on 07/05, but it has never been opened. isit still safe to use?

It is still safe. Over a long period of time small amounts of Potassium Nitrate will convert to Potassium Carbonate due to the Carbon Dioxide in the atmosphere.

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What does chemical symbols mean?

Are you talking about chemical formulas, reaction symbols or the elements on the Periodic Table?

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The goal for the filter would be to keep the water pump clean, so normally you would place the mechanical filter media where the water enters the filter. The water should not be able to go around it, but instead have to pass through the media. Mechanical filtration pulls out pieces of things. If you accidentally get too much food in the tank, and it makes it to the filter, this is what you want to pull out and clean at the faucet. Remove the debris, run some tank water through it so you remove the chlorine, then put it back in the filter.
Carbon/charcoal and sometimes white rocks called zeolite will be doing your chemical filtration, removing heavy metals, and other chemicals, so they can go next. The biological filter media is what is most important. Have this media - a large amount of surface area that water moves through, but will not get clogged up - next to the pump part of your filter. NEVER change these. These are the home for your beneficial bacterial cultures. Detritus (decaying organic material, solid waste, uneaten food, dead plant matter) and liquid fish waste become toxic ammonia. These bacteria consume the ammonia and turn it into toxic nitrites. Another bacterial culture living in the same place turn toxic nitrites into nitrates. Nitrates are plant food, here comes your algae if you leave your lights on all day but don't have live plants in your tank. Nitrates gradually build over time, and fish gradually become accustomed to higher levels of nitrates. This is why we do Regular Partial water changes, to keep nitrate levels low. If you don't do Regular Partial water changes, and suddenly change a lot of water, or add a new fish that doesn't get the long period of time to acclimate to these higher levels, fish can get sick and some may die.
Biological filtration is the most important thing in your aquarium, second only to water. Know where your bacteria live and DO NOT clean it, replace it, dry it out, bleach it, wash it under tap water, and so on. Just leave it alone the same way you leave your fish alone.
Fish can survive just fine without mechanical and chemical filtration, so there is really no need to continue to use those in your aquarium, other than keeping your money in the pockets of the people who tell you that you have to have them and you have to replace them. Any company that tells you the biological filter media must be replaced is lying to you and I would urge you to never buy their products again.
A bulk amount of carbon and nylon mesh bags can be purchased from any decent pet store or supplier, as can foam that can be cut to fit into your particular filter. Personally, I recommend not bothering with either of these, and adding more biological filter media in the extra space you now have. You can never have too much beneficial bacterial in your tank.

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Write down the equation for the formation of the complex trans-K[Cr(C2O4)2(H2O)2.3H2O from the reactants K2Cr2O7 and H2C2O4.2H2O.

limiting reactant:
The limiting reagent, or also called the "limiting reactant", is the chemical that determines how far the reaction will go before the chemical in question gets used up, causing the reaction to stop. The chemical of which there are fewer moles than the proportion requires is the limiting reagent.

Limiting reagent formula
There is a much simpler formula which can be used. However, you must first calculate the moles of both of the reagents in the reaction. Once the number of moles have been figured out, just simply fill in this equation (reagent 1 being the first reactant and 2 being the second):

When the answer to the formula is less than zero, reagent 1 is the excess reagent. When the answer is larger than zero, reagent 1 is the limiting reagent. The number shows how much in excess one reagent is from another. If the answer for the formula is zero, both reagents are perfectly balanced. The unit of an answer is in moles.

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Calculate the volume of silver nitrate that reacted with chlorine ion ,50.0cm

For a question like this you should give the fully balanced chemical equation specifying the phase (liquid, solid or gas) of all the reagents. Supply also any density that is required to convert from masses to volumes.
If the problem came from a book, just copy it in full without leaving out any thing.

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How are fertilizers removed from water?

Fertilizers like phosphate are removed through addition of another chemical, usually iron. The substances than become solid precipitates, that can be filtered from the water. The removal of ammonium and nitrates is a little bit more complicated; it is a purification process that takes both aerobic and anaerobic conversion to remove them.

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After bonding atoms we are ask to name the resulting compounds in its common name and as well as its chemical name. so my question is, what is the difference between common names and chemical names? please...

Common name is the name what people call it, it usually gives you no idea as to what the chemical composition of the compound is. (eg: Common name for Sodium Chloride is Salt) whereas the chemical name is based on what the compound is made up of (A molecule of salt is made up of one atom of Sodium and one atom of chlorine. this can be understood from the chemical name, but not from the common name.)

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