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Chemistry

1 answer:

yarga [219]3 years ago

4 0

The answer to this problem is quite simple, it’s 9

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1) Why are the antimony and beryllium ions so small? Differentiate between the causes.

Viefleur [7K]

1. For this question, the adjective small must be percepted in a relative sense. This is because it is not the smallest ion (that would be hydrogen). It could be that the antimony and beryllium ions are smaller compared to their neutral forms. This is because they donate electrons when ionized. As a result, the electrons are reduced, so does the electron cloud which makes the radius much smaller.

2. The periodic table is arranged in terms of increasing atomic number. For neutral atoms, the number of protons (atomic number) is equal to the number of electrons. So, the farther we go down the table, the higher the atomic number. The higher the atomic number, the bigger the electron cloud which makes the atomic radius bigger. Because by definition, atomic radius is the length from the nucleus to the farthest electron from the nucleus.

4 0

2 years ago

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What are the 3 properties of magnetisms?

Pavlova-9 [17]

Answer:

1. Electromagnetism

2. Phase

3. Color

5 0

3 years ago

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Using the formation of formaldehyde as a model, comment on photosynthesis and the formation of sugars using what we know about e

Gwar [14]

Answer:

It produces free energy.

Explanation:

Photosynthesis is a process which is used by the plant for producing energy in the form of ATP. This energy is used by the plants in different activities which enables the plant to grow and develop successfully. There are some factors which causes change in the rate of photosynthesis means the production of energy for the plant body. If the environmental factors are suitable, more energy is produced through the process of photosynthesis.

6 0

2 years ago

Convert 150 g/L to the unit g/mL. 15,000 g/mL 15 g/mL 0.15 g/mL 0.0015 g/mL

fredd [130]

1 g/L ------- 0.001 g/mL
150 g/L ----- ?

150 x 0.001 / 1

= 0.15 g/mL

Answer C

6 0

3 years ago

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Write the formula for the polyatomic ion in fe(hco3)3. express your answer as an ion.

Juliette [100K]

Ions can be atomic or molecular. If an atom contains either positive or negative charge it said to be atomic cation or atomic anion.

When a molecule carry positive or negative charge it is called as polyatomic cation or polyatomic anion. Generally charged or ionized molecules are called as polyatomic ions.

In given question Fe(HCO₃)₃ ionizes as follow,

Fe(HCO₃)₃ → Fe³⁺ + 3 HCO₃⁻

The Ions produced are Fe³⁺ and HCO₃⁻. Fe³⁺ is said to be atomic (Ferric) ion and HCO₃⁻ (Bicarbonate) is polyatomic ion or molecular ion.

6 0

3 years ago