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sergij07 [2.7K]
3 years ago
6

according to the periodic table, which of the following is the correct symbol for the element copper? a. cl b. cu c. co d. cr

Chemistry
1 answer:
Allushta [10]3 years ago
5 0
The symbol for copper is Cu.
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Nitrogen gas in the atmosphere is converted to forms of nitrogen usable by vegetation via:
lesya692 [45]
<span>FIXATION.In the nitrogen cycle, nitrogen is converted into many chemical forms through biological and physical processes like nitrogen fixation, ammonification, nitrification and denitrification.During ammonification, ammonium ions are released after decomposition of plants.During nitrogen fixation, nitrogen gas is changed to nitrates by nitrogen fixing bacteria in the soil.These are used by vegetation.</span>
8 0
3 years ago
What is the simplest unit factor that relates the number of hydrogen in sucrose to the number of oxygens?
butalik [34]

The simplest unit factor that relates the number of hydrogen in sucrose to the number of oxygens is 1 O atom/ 2 H atoms.

Sucrose is a diasaccharide having the formula; C12H22O11.

This implies that there are twenty two atoms of hydrogen and eleven atoms of oxygen in a molecule of sucrose.

This gives a ratio of 2 hydrogen atoms to one oxygen atom. Therefore, the simplest unit factor that relates the number of hydrogen in sucrose to the number of oxygens is 1 O atom/ 2 H atoms.

Learn more: brainly.com/question/11347582

8 0
3 years ago
Using the average atomic mass, calculate the mass in grams of 143 iron atoms
melomori [17]

Answer:

1326.6 × 10⁻²³g

Explanation:

Given data:

Number of atoms of iron = 143 atoms

Average atomic mass of iron = 55.845 amu

Mass of iron = ?

Solution:

It is known that,

55.845 g of iron = one mole of iron = 6.02× 10²³ atoms

For 143 atoms:

143 atoms /6.02× 10²³ atoms × 55.845 g

23.754 × 10⁻²³× 55.845 g

1326.6 × 10⁻²³g

7 0
3 years ago
Place the following compounds in order of increasing strength of intermolecular forces. HF H2 CH3Cl
Scorpion4ik [409]

Answer:

H2 < CH3Cl < HF

Explanation:

The intermolecular forces are the forces that bond the molecules together in a substance. There are three types of these forces:

  1. Dipole induced -dipole induced, or London dispersion -> Is the weakest and is presented in nonpolar molecules, in which a dipole is induced and so the molecules are joined together;
  2. Dipole-dipole -> Is stronger than the London dispersion and occurs in a polar molecule. In this case, the dipole already exists (partial positive and negative charges), so the poles are attracted;
  3. Hydrogen bond -> It's the strongest and is formed when the hydrogen is bonded with a higher electronegativity element (F, O, and N).

So, the molecule of H2 is linear and formed by the same element, so, is nonpolar, and has London dispersion forces. The molecule of CH3Cl has 3 nonpolar bonds (C-H), and one polar bond (C-Cl), so it's polar and has dipole-dipole forces. And the HF molecule has hydrogen bonds.

*A polar bond is a bond formed by elements with different electronegativities.

3 0
3 years ago
in carbon dioxide gas, the carbon atom forms two double bonds. what will the geometry of the bonds be
Fudgin [204]

Answer:

Linear geometry

Explanation:

  • In carbon dioxide, the carbon atom forms two double bonds. Each double bond is a group, hence there are two electron groups around the central atom.
  • <u><em>With two bonding pairs on the central atom and no lone pairs, the molecular geometry of CO2 is linear.</em></u>
  • The linear arrangement places the groups 180 degrees apart and it minimizes the repulsion in the molecule,
8 0
3 years ago
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