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inessss [21]
3 years ago
8

What do elements in block have in common?​

Chemistry
2 answers:
ArbitrLikvidat [17]3 years ago
7 0

Answer:

  • the d block element are all metals and most have one ore more chemically active d-orbital electrons.because there is a realatively small differernce in the energy of the different d-orbital electrons ,the number ofelectrons participating in chemical bonding can vary.
iragen [17]3 years ago
5 0

Answer:

The d-block elements are all metals and most have one or more chemically active d-orbital electrons. Because there is a relatively small difference in the energy of the different d-orbital electrons, the number of electrons participating in chemical bonding can vary.

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PLEASE SOMEONE! The density of the acetic acid solution is 1.05 g/mL. Calculate the %(m/m) of the acetic acid solution (convert
tigry1 [53]

Answer:

The Percentage concentration of acetic acid = 1.39 %

Explanation:

Density of acetic acid solution = 1.05 g/mL

Volume of acetic acid solution = 0.1 L = 100 mL

From the formula, Density = mass / volume; mass = density × volume

Mass of acetic acid solution = 1.05 g/mL × 100 mL = 105 g

Molar concentration of acetic acid solution = 0.243 mol/L

Molar mass of acetic acid, CH₃COOH = (12 × 2 + 1 ×4 + 16 ×2) = 60 g/mol

From the formula, mass concentration = molar concentration × molar mass

Mass concentration of acetic acid, CH₃COOH = 0.243 mol/L × 60 g/mol = 14.58 g/L

In one liter of acetic acid solution, there are 14.58 g of acetic acid. Therefore, in 0.1 L, there will be 14.58 × 0.1 = 1.458 g of acetic acid.

Percentage concentration of acetic acid = mass of acetic acid / mass of acetic acid solution × 100%

Percentage concentration of acetic acid = (1.458 / 105) × 100% = 1.39 %

The Percentage concentration of acetic acid = 1.39 %

8 0
3 years ago
All substances have characteristic properties. If one of these properties can be observed without changing the identity of the
n200080 [17]
Answer: Physical property
8 0
3 years ago
Arrange the following elements in order of increasing from smallest to largest atomic size K,O, Cs, Se explain why the reason wh
lyudmila [28]

Answer:

smallest is O then Se then K then Cs.

Explanation:

These trends exist. elements tend to get smaller as it completes it's shell since there is more attraction when it is complete. plus the further down the periodic table you go the bigger it is. there are more electrons which repulse each other and make it bigger.

3 0
3 years ago
How many atoms does 2NaOH have
saul85 [17]
The substance of 2 Naoh contains 6 atoms
8 0
4 years ago
Read 2 more answers
What is a mixture of two insoluble mixtures called​
madreJ [45]

Answer:

Emulsion

Explanation:

Emulsion is a special type of mixture formed by combining two liquids that do not normally mix. An example of emulsion is;

Oil and Water

5 0
3 years ago
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