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NeX [460]
2 years ago
12

How to round the decimal 4.15 to the hundredths place?​

Chemistry
1 answer:
gladu [14]2 years ago
8 0

Answer:4.15 is already in the hundreths place so you are good!

if it was 4.155 then you would round it to 4.16 but its NOT that so the answer IS 4.15

Explanation:

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Which of these laboratory techniques is best to separate a solid from a liquid to recover the liquid? f chromatography g filteri
galina1969 [7]
Answer:
            Filtering <span>is best laboratory technique to separate a solid from a liquid to recover the liquid.

Explanation:
                   A solid particles present in liquids can be separated from liquid by utilizing a membrane having pores large enough to allow the liquid molecules to pass through and small enough to stop the solid particles from crossing. 

Example:
              Tea Filters are used to separate Tea from the grounds.

              Kidney is an excellent example of Biological Filter.

              </span><span>Whatman Cellulose Filter Paper used in Chemistry Labs.</span>
3 0
3 years ago
What is the ionic compound of Na^+ and CO3^2-
maksim [4K]

To find the chemical formula of an ionic compound, the first step is to find the charge of the 2 ions. As given already, the charge of sodium ion is 1+, and carbonate ion has a charge of 2-. We can picture it like that: Sodium ion loses 1 electron and carbonate ion gains 2.

The next step is to find how the 2 ions can lose and gain electrons equally. In this case, since each Na ion only loses 1 electron, it cannot satisfy the need of one carbonate ion, since they need 2, not 1. Therefore, 2 Na ions can cover the need of one carbonate ion. So, the ratio of Na to CO3 ion should be 2:1.

Now just combine the 2 ions, positive one at the front, which makes it NaCO3, make sure you do not add the charge and notice that CO3 is a molecule itself so do not remove the 3. Now because the ratio is 2:1, so the final formula is Na2CO3, no need to add 1 if the ratio is 1.

Your answer should be Na2CO3.

8 0
2 years ago
What is the pH of a solution with a hydronium concentration of 0.36 M?
kodGreya [7K]

Answer:

<h2>0.44 </h2>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ { H_3O}^{+}]

From the question we have

pH =  -  log(0.36)  \\  = 0.4436...

We have the final answer as

<h3>0.44</h3>

Hope this helps you

8 0
3 years ago
Element X has an electron configuration of 2-8-3. This element will combine with the phosphate ion to form a compound with the f
Alinara [238K]
X element can give 3 electrons, and ions X³⁺ can be formed.
Phosphate ion - (PO4)³⁻,
So compound will have formula  X³⁺(PO4)³⁻,
XPO4
5 0
3 years ago
Read 2 more answers
Which of the following statements is predicted to be false?
Paul [167]

Answer:

(c) an aqueous solution of CO2 exhibits dipole-dipole forces between solute and solvent

Explanation:

Co2 is a non-polar molecule.

It is actually shown to be O=C=O.

When dissolved in water to get aqueous solution.

Dipole on water molecule can induce dipole on CO2.

This entails that we should have dipole-induced dipole forces when we have a mixture or solvent and solute.

But the given statement states dipole dipole forces between solute and solvent.

Hence the statement is false.

6 0
3 years ago
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