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Alona [7]
3 years ago
10

What are four ways you can separate mixture?

Chemistry
2 answers:
ollegr [7]3 years ago
8 0
- Letting the mixture sit for a little while and then everything would sink to the bottom
- Maybe you can heat up the mixture (not to sure)
- Condensation
- Evaporation

Not too sure though
svp [43]3 years ago
5 0

Filtration

Evaporation

Density

Magnetism

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Fe(II) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the solution, which converts Fe(II)
vovangra [49]

Answer:

0,051g of O₂

Explanation:

The reaction of precipitation of Fe is:

4Fe(OH)⁺(aq) + 4OH⁻(aq) + O₂(g) + 2H₂O(l) → 4Fe(OH)₃(s)

<em>-Where the Fe(OH)⁺ is Fe(II) and Fe(OH)₃ is Fe(III)-</em>

This reaction is showing you need 1 mol of O₂(g) per 4 moles of Fe(II) for a complete reaction.

85mL= 0,085L of 0,075M Fe(II) are:

0,085L*0,075M = 6,34x10⁻³ moles of Fe(II)

For a complete reaction of 6,34x10⁻³ moles of Fe(II) you need:

6,34x10⁻³ moles of Fe(II)×\frac{1molO_2}{4moles Fe(II)} =

1.59x10⁻³ moles of O₂. In grams:

1.59x10⁻³ moles of O₂×\frac{32g}{1molO_2} = <em>0,051g of O₂</em>

<em></em>

I hope it helps!

7 0
3 years ago
What is a food web made up of
brilliants [131]

Answer:

A food web is made up of all the food chains in a single ecosystem. Each living thing in an ecosystem belongs to many food chains. A food chain is a path that energy takes through a certain ecosystem. Trophic Levels. Organisms in food webs are grouped into categories called trophic levels.

Explanation:

I HOPE THIS HEPLS HAVE A WONDERFUL DAY!:)

7 0
2 years ago
Read 2 more answers
Ecological succession is
Serjik [45]
Ecological succession is the steady and gradual change in a species of a given area with respect to the changing environment. it is a predictable change and is an inevitable process of nature al all the biotic components have to keep up with the changes in our environment.
3 0
3 years ago
How many ml of concentrated hydrochloric acid would be required to make 1 L of a 0.2 M solution? Assume that concentrated hydroc
fgiga [73]

<u>Answer:</u> The volume of concentrated hydrochloric acid required is 16.53 mL

<u>Explanation:</u>

To calculate the volume of concentrated solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of the concentrated solution

M_2\text{ and }V_2 are the molarity and volume of diluted solution

We are given:

Conversion factor:  1 L = 1000 mL

M_1=12.1M\\V_1=?mL\\M_2=0.2M\\V_2=1L=1000mL

Putting values in above equation, we get:

12.1\times V_1=0.2\times 1000\\\\V_1=16.53mL

Hence, the volume of concentrated hydrochloric acid required is 16.53 mL

3 0
3 years ago
What is the rule for determining the mass of an atom
Elena-2011 [213]

Answer:

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit. By adding together the number of protons and neutrons and multiplying by 1, you can calculate the mass of the atom.

5 0
3 years ago
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