A serious problem, please help

Actually, you don't have to worry so much. Don't be so suspicious... In fact, making friends and keeping friends is very simple, as long as you treat them with your heart and make them feel your sincerity

I hope you find good friends soon

Hey...You're friends with your insiders, too!

It's okay to have one more friend!

Three people are just right!

Hey...I told you, you don't think about it for yourself, and you come to ask for help again.

This kind of question is not a test of calculation, but a result of thinking.

First of all, we don't know about the reaction between hno3 and metal, al3+fe3+ and no, so we can't write the equation, let alone how to solve the problem with the equation.

So I thought of the conservation method, what is conservation here?

The title says complete precipitation, so the following is the precipitation process.

Al--Al3+--Al(OH)3 (Note if Al loses 3 electrons and ends up exactly 3 OH-

Fe --Fe3+--Fe(Oh)3 (Note that if you don't lose 3 electrons from FEL, you end up with 3 Oh-

To establish conservation, the number of electrons lost by the metal is the same as the number of oh- with sodium hydroxide added, so if you find the electrons, you get oh-, you get oh-, you get the naoh, you get the volume.

So how do you calculate how many electrons are lost?

Is it that all the lost electrons are transferred to Hno3 to form NO.

Hno3---no loses electron number 3e

Now no is = mol so the number of electrons required to generate no for mol = * 3= mol

So the required NAOH is mol

Now the concentration of NaOH is 3 mol l

So the volume is l = 150 ml

You're welcome. 1.The presence of a lawyer is equivalent to an official notarization, and I don't know how long it will be valid, but your contract is definitely still valid, but you have to give the reason why he has not performed the contract for one year and you have not filed a lawsuit.

2.If the property certificate is still in the bank, there is no way to transfer it now, but you should go to the bank to investigate this, and don't listen to his words. A lawyer is required to change or renew the contract, and it is best to have the new contract notarized at a notary office.

3.Unless there is a major flaw in the contract you signed, you can't afford to run out of money, rest assured, the contract is a contract after all.

Now you can sue him for breach of contract and ask him to return the money to you and compensate for the liquidated damages, but only if you are sure that he has the ability to repay, otherwise it will be more than worth the loss if you tear your face.

You can also renew the contract with him, of course, when you renew, you have to clearly indicate that you will add liquidated damages.

Actually, there is a perennial question here: who do we learn for?

Learn it for yourself, and you won't hold on to it for the sake of so-called vanity, continue to think for yourself, and just seek ready-made answers on the Internet.

If it continues like this, it will only be a matter of time before the bottom is revealed.

There are some things that must come at a price. If you do, don't be afraid to pay some negative costs such as being snubbed and ridiculed after being "exposed".

In fact, being ridiculed and looked at in a different light is just a trivial matter, a small price to pay. If you don't fit to stop this "vice" of finding answers online, you will pay a greater price for it......

It's not a problem with what you check online, the key is whether you can turn these things into your own.

Things on the Internet are very messy, and they also need to be identified, and it is also the ability to always find the right thing.

It's not wrong to look things up, it's just to add thinking, discernment, and understanding.

It's because I don't have a firm grasp of the knowledge I have learned, so I always feel that I am doing the wrong question, and I just need to work harder.

In fact, everyone will not care too much about your grades, but you are too worried about yourself, everyone is busy with their own, and there is, you have to seriously improve your grades, what others say, it is theirs, only the grades are their own, when others are disappointed in your performance, they will slowly forget, the future glory will make others envious, don't let vanity drown yourself, come on, really improve your grades to the point of envy of others.