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3 years ago

Which solution is a homogeneous mixture?

Chemistry

2 answers:

Hoochie [10]3 years ago

8 0

Answer:

A homogenous mixture is a mixture that contains a single phase

Explanation:

In the physical sciences, a phase is a region of space, throughout which all physical properties of a material are essentially uniform. Hence when we refer to a phase we mean a region of entirely homogeneous composition.

A solution of ethanol in water constitutes a single phase, only the liquid can be seen. This is a typical example of a homogeneous mixture.

r-ruslan [8.4K]3 years ago

6 0

Within the categories of homogeneous and heterogeneous mixtures there are more specific types of mixturesincluding solutions, alloys, suspensions, and colloids. A solutionis a mixture where one of the substances dissolves in the other. The substance that dissolves is called the solute.

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HELP!!!

Volgvan

<h3><u>Answer;</u></h3>

pH = 6.34

<h3><u>Explanation;</u></h3>

pH is given as -log{H+]

But;

pH + pOH = 14

However;

pOH = -log [OH-]

[OH-] = 2.20 × 10−8 M

Thus;

pOH = -log (2.20 × 10−8 M)

= 7.66

But;

pH = 14 - pOH

= 14 - 7.66

3 0

3 years ago

Read 2 more answers

Suppose that you lowered the temperature of a gas from 100˚C to 50 ˚C. By what factor do you change the volume of the gas?

Maru [420]

Answer:- Volume decreases by a factor of 1.15.

Solution:- At constant pressure, volume of the gas is directly proportional to the the kelvin temperature.

The equation is written as:

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where, $V_1$ is the volume at initial temperature $T_1$ and $V_2$ is the volume at final temperature $T_2$ .

Temperature must be in kelvins. So, let's convert both the temperatures to kelvin.

To convert degree C to kelvin we add 273.

So, $T_1$ = 100 + 273 = 373 K

$T_2$ = 50 + 273 = 323 K

The equation could also be written as:-

$\frac{V_1}{V_2}=\frac{T_1}{T_2}$

$\frac{V_1}{V_2}=\frac{373}{323}$

$\frac{V_1}{V_2}$ = 1.15

From here we could say that the volume decreases by a factor of 1.15.

For example if the initial volume $V_1$ is 1 L then final volume $V_2$ will be $\frac{1L}{1.15}$ that is 0.87 L.

4 0

3 years ago

How many elements are identified in tearms of their atoms

lianna [129]

<span>their identified by the number of protons they have in the nucleus which = their electrons. </span>

6 0

4 years ago

The stability of an isotope is related to its ratio of

Paladinen [302]

< neutrons to protons >

Hope this is helpful

3 0

4 years ago

Please solve this problem. IT IS TOO URGENT ‍♂️

kirill [66]

Answer:

1. Sulphuric acid

2. Car battery acid

3. Washing up liquid

4. Milk of magnesia

5. Metal polish

6. Oven cleaner

Explanation:

Universal paper can determine the pH of a solution. It ranges from dark red (pH 0 - very acidic) to orange/yellow, to green (pH 7 - neutral) to blue, dark blue and purple (pH 14 - very alkaline)

Sulphuric acid has the lowest pH as the universal indicator is red.

The next is car battery acid which is pink - not as acidic as red.

The next is washing up liquid, which is yellow, around pH 3 or 4.

The next is milk of magnesia with light blue, around pH 9 or 10.

Metal polish is dark blue - around pH 11.

Oven cleaner is the darkest, with purple.

4 0

4 years ago