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algol [13]
3 years ago
6

Which of the following is a homogeneous mixture of two or more pure substances?

Chemistry
2 answers:
hammer [34]3 years ago
4 0

Answer:

Option b, Tea

Explanation:

Tea is a homogeneous mixture of tea extract, milk, sugar and water. Tea extract, milk and sugar are water soluble and hence, make a homogeneous mixture.

Homogeneous mixture is a mixture of two or more components having same proportions of components through out the sample.

Mercury is an element not a mixture.

Water is a compound. Compound is formed by two or more element chemically bonded to each other. It is a pure substance not a mixture.

Similarly, alcohol is also a compound not a mixture,

So, among the given options, tea is a homogeneous mixture.

lukranit [14]3 years ago
3 0
Mercury is a homogenous mixture of two or more pure substances
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A logical conclusion based on observations is called an inference.
Roman55 [17]
ANSWER: True
EXPLANATION: An inference is a logical conclusion based on observations.

Hope it helps u!
5 0
3 years ago
Read 2 more answers
Hydrogen may not be advantagous as a fuel because-------
sergeinik [125]

Answer:

Hydrogen may not be advantageous as a fuel because...

- Its expensive

- Its difficult to store

- Its highly flammable

- Its dependent on fossil fuels

Explanation:

Its expensive - Not only is hydrogen gas expensive, but it also takes a lot of work to free from other elements. It is both expensive and time-consuming to produce.

Its difficult to store - Moving hydrogen is not an easy task. Moving anything more than small amounts of hydrogen was also very expensive, making it impractical.

Its highly flammable - When exposed to the atmosphere, hydrogen could potentially form explosive mixtures.

Its dependent on fossil fuels - Hydrogen energy itself is renewable. However, the process of separating it from oxygen uses non-renewable sources such as coal and oil.

~Hope this Helps!~

7 0
3 years ago
What is the heat of fusion of water in calories per mole?​
Mumz [18]

Answer:

<u><em>79.72 Calories</em></u>

Explanation:

6 0
2 years ago
Read 2 more answers
As you move across the period on the periodic table what pattern can be described about the electron configurations?
xeze [42]

Answer:

Elements in the same period have same number of electronic shell and electron is increased by one in every coming element with in same electronic shell.

Explanation:

Consider the second period of periodic table. This period consist of eight elements lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon.

Electronic configuration of lithium:

Li₃ = [He] 2s¹

Electronic configuration of beryllium:

Be₄ = [He] 2s²

Electronic configuration of boron:

B₅ = [He] 2s² 2p¹

Electronic configuration of carbon:

C₆ = [He] 2s² 2p²

Electronic configuration of nitrogen:

N₇ = [He] 2s² 2p³

Electronic configuration of oxygen:

O₈ = [He] 2s² 2p⁴

Electronic configuration of fluorine:

F₉ = [He] 2s² 2p⁵

Electronic configuration of neon:

Ne₁₀ = [He] 2s² 2p⁶

All these elements present in same period having same electronic shell and number of electron increased by 1.

4 0
3 years ago
If you are using 3.00% (mass/mass) hydrogen peroxide solution and you determine that the mass of solution required to reach the
Maurinko [17]

Answer:

0.004522 moles of hydrogen peroxide molecules are present.

Explanation:

Mass by mass percentage of hydrogen peroxide solution = w/w% = 3%

Mass of the solution , m= 5.125 g

Mass of the hydrogen peroxide = x

w/w\% = \frac{x}{m}\times 100

3\%=\frac{x}{5.125 g}\times 100

x=\frac{3\times 5.125 g}{100}=0.15375 g

Mass of hydregn pervade in the solution = 0.15375 g

Moles of hydregn pervade in the solution :

=\fraC{ 0.15375 g}{34 g/mol}=0.004522 mol

0.004522 moles of hydrogen peroxide molecules are present.

5 0
3 years ago
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