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Lerok [7]
2 years ago
10

Are s blocks metals ?

Chemistry
1 answer:
Mamont248 [21]2 years ago
8 0
Yes, S-blocks are metals except for helium and hydrogen.  The S-block metals are shiny, silvery and relatively soft, although they can easily lose electrons.  Helium and hydrogen have valence electrons but also lack some similar properties as the other metals.
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An object has a mass of 20 g and a volume of 5 mL what is the objects density
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3 years ago
Why is the chemical formula 2C NOT an example of a diatomic molecule?
katen-ka-za [31]
Because it represents 2 atoms of carbon not 2 molecules of carbon
8 0
3 years ago
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List 10 chemical reactions reactions that have benefited your life today. include the reason you think each was indeed a chemica
vagabundo [1.1K]

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7 0
2 years ago
If i have 8 L of 0.25 M solution, how many miles of MgCl2 are present
qaws [65]

Answer:

2 moles

Explanation:

The following were obtained from the question:

Molarity = 0.25 M

Volume = 8L

Mole =?

Molarity is simply defined as the mole of solute per unit litre of solution. It is represented mathematically as:

Molarity = mole of solute/Volume of solution.

With the above equation, we can easily find the number of mole of MgCl2 present in 8 L of 0.25 M MgCl2 solution as follow:

Molarity = mole of solute/Volume of solution.

0.25 = mole of MgCl2 /8

Cross multiply to express in linear form

Mole of MgCl2 = 0.25 x 8

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Therefore, 2 moles of MgCl2 are present in 8 L of 0.25 M MgCl2 solution

4 0
3 years ago
The osmotic pressure of a solution formed by dissolving 35.0 mg of aspirin (c9h8o4) in 0.250 l of water at 25°c is __________ at
Lunna [17]
Mass of aspirin = 0.025 g
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5.551 x 10 ^-04 mole L -1 x 0.08206 L atm K−1 mol−1 x 298 K x 1 = 0.0136 atmospheres
6 0
2 years ago
Read 2 more answers
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