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frosja888 [35]
3 years ago
14

Water is an example of a compound that is held together by what bonds

Chemistry
1 answer:
nikklg [1K]3 years ago
5 0
Water is held together by hydrogen bonds.

Water molecule: H2O:
--- = hydrogen bond

O
/ \
H H ---O
/ \
H H
You might be interested in
Which of the following has the highest ionization energy? Rubidium Zirconium Niobium
____ [38]

Niobium has Highest ionization energy.

<u>Explanation:</u>

The next ionization energy removes an electron from the same electron shell, which increases "ionization energy" due to "increased net charge"of the ion from which the electron is being removed.

Let's compare each of the metals first ionization energies,

Rubidium has its first ionization energy as 403 kJ / mol.

Zirconium has its first ionization energy as 660 KJ / mol.

Niobium has its first ionization energy as 664 KJ / mol.

From the given data above, we can infer that Rubidium has the least Ionization energy whereas Niobium has the highest Ionization energy. We can give the increasing order of the given elements as follows-  

Rubidium < Zirconium < Niobium

8 0
3 years ago
In a five-fold serial dilution of a 20 ug/mL solution, all tube dilutions are 1/5. What is the substance concentration in the th
sergij07 [2.7K]

Answer:

In the third tube, the concentration is 0.16 ug/mL

Explanation:

In the first step, the solution is diluted by 5. Then, the concentration will be

20 ug/mL / 5 = 4 ug/mL

Then, in the second step this 4 ug / ml solution is diluted by a factor of five again:

4 ug /ml / 5 = 0.8 ug/mL

This solution is then diluted again by 5 and the concentration in the third tube will be then:

0.8 ug/mL / 5 = <u>0.16 ug/mL </u>

<u />

Another way to calculate this is to divide the original concentration by the dilution factor ( 5 in this case) elevated to the number of dilutions. In this case:

Concentration in the third tube = 20 ug/mL / 5³ = 0.16 ug/mL

3 0
3 years ago
At a certain temperature the reaction
lyudmila [28]

The concentration of carbon monoxide at equilibrium is 0.209 M.

<h3>Concentration of each gas</h3>

CO2 = 2 mol/5 L = 0.4

H2 = 1.5 mol/5L = 0.3

<h3>ICE table</h3>

Create ICE table as shown below

        CO2(g)    +     H2(g) ↔       CO(g)    +     H2O(g)

I          0.4               0.3                0                  0

C        - x                 - x                 x                   x

E        0.4 - x           0.3 - x           x                   x

Kc = [CO][H₂O] / [CO₂][H₂]

2.5 = (x²)/(0.4 - x)(0.3 - x)

x² = 2.5(0.4 - x)(0.3 - x)

x² = 2.5(0.12 - 0.7x + x²)

x²  = 0.3 - 1.75x + 2.5x²

0 = 1.5x² - 1.75x + 0.3

solve the quadratic equation using formula method;

x = 0.209

Thus, the concentration of carbon monoxide at equilibrium is 0.209 M.

Learn more about concentration here: brainly.com/question/17206790

#SPJ1

5 0
2 years ago
One of the simple substances made up of one kind of atom is a(n)
elena-14-01-66 [18.8K]

Answer:atoms electrons

Explanation:

6 0
4 years ago
What solution does ?
Ainat [17]
Unsaturated would be the correct answer.
3 0
2 years ago
Read 2 more answers
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