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antoniya [11.8K]
3 years ago
13

What characteristics are shared by all alkali metals and alkaline earth metals?

Chemistry
1 answer:
serious [3.7K]3 years ago
8 0

Answer:

All alkali and alkaline earth metals dissolves in water to form alkaline solutions.

Explanation:

The alkali metals are found in group one of the periodic table while the alkaline earth metals are found in group 2. These two groups of elements are quite reactive and they react very well with air and water. All the elements in the two groups react with water to give rise to alkaline solutions; solutions whose pH range from 8 to 14.

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4. Froath floatation process is used for*
lbvjy [14]

Answer:

Explanation:

Froath flotaion process is based on thie wttebality properteis like hydrophillicity and hydrophobicity.

Incase of sulphide ore processing,

The metallic sulphide particles of ore are preferentially wetted by oil and the gangue particles by water. By doing thise you are sperating required sulphide ore particels from unwanted gaunge , by doing this you are incresing the concentation of Sulfide in ore by removing the not required gaunge particles.

Hope this helps you to decide your annswer

5 0
3 years ago
A student has 2 rubber balls of the same size and weight. Ball A is still and Ball B is rolling.Ball B hits Ball A, and Ball A s
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Answer:

It starts to move because of Newtons first law "An object will not change it's motion unless a force acts on it"

Explanation:

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6 0
3 years ago
What has more particles: a mole of hydrogen or a mole of uranium?
algol [13]

Answer

hydrogen

Explanation:

7 0
2 years ago
Which of the following is the correct scientific notation for 0.000056?
svet-max [94.6K]
Hi,

0.000056 = 5.6 \times  {10}^{ - 5}

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r3t40
7 0
3 years ago
Consider the following reversible reaction.
andriy [413]

Answer:

No one is correct. The correct expression is:

Keq = [H₂]²  . [O₂]² / [H₂O]²

Explanation:

To build the Keq expression in a chemical equilibrium you must consider the molar concentrations of reactants / products, and they must be elevated to the stoichiometric coefficient.

The balance reaction is:

<u>2</u> H₂O (g)  ⇄  <u>2</u> H₂ (g)  +  O₂ (g)

Keq = [H₂]²  . [O₂]  / [H₂O]²

In opposite side: <u>2</u> H₂ (g)  +  O₂ (g)   ⇄  <u>2</u> H₂O (g)

Keq =  [H₂O]² / [H₂]²  . [O₂]  

6 0
3 years ago
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