What is the chemical symbol for the starting substance 2nacl+2h2o->2naOH+cl2+h2

What is oxidized in an electrolytic cell with aluminum and gold electrodes?

irina [24]

Answer:

The answer is B The aluminum metal.

Explanation:

have a wonderful day! do good in school you got this! :)

4 0

3 years ago

A compound with the empirical formula, ch2, has a molar mass equal to 84.2 g/mol. what is the molecular formula for the compound

MatroZZZ [7]

<span>Mass of CH2 = 12 + 2 = 14 g/mol The number of CH2s there are. So since the total mass is 84.2 g/mol. The solution is 84.2/14 = 6.012 thus the answer is 6 There are 6(CH2) So the molecular formula is C6H12</span>

7 0

3 years ago

"What makes a bond polar"?

r-ruslan [8.4K]

Answer:

The answer to your question is: letter A.

Explanation:

A Covalent bond polar is between 2 non metals where one atom is bigger than the other one so the distribution of charges creates this polarity.

A. One atom attracts shared electrons more strongly than the other atom This is the correct definition of bond polar, one element is bigger and stronger than the other element.

B. One atom has transferred its electrons completely to another atom This definition is incorrect, it is the definition of ionic bonding.

C. A sea of electrons has been created between the elements This definition is incorrect for the polar bond, it describes a metallic bonding.

D. Two atoms are sharing electrons with equal attraction This definition is incorrect for a polar bond, but is the correct definition for nonpolar bonding.

8 0

3 years ago

The atom with the same number of neutrons as 12C is 9Be. 11B. 13C. 14N.

julia-pushkina [17]

Answer : The atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

Explanation :

The given atom is, $^{12}C$

Atomic mass number = 12

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 12 - 6 = 6

Now we have to determine the number of neutrons in the given options.

In atom, $^{9}Be$

Atomic mass number = 9

Atomic number = 4

Atomic number = Number of protons = Number of electrons = 4

Number of neutrons = Atomic mass number - Atomic number = 9 - 4 = 5

In atom, $^{11}B$

Atomic mass number = 11

Atomic number = 5

Atomic number = Number of protons = Number of electrons = 5

Number of neutrons = Atomic mass number - Atomic number = 11 - 5 = 6

In atom, $^{13}C$

Atomic mass number = 13

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 13 - 6 = 7

In atom, $^{14}N$

Atomic mass number = 14

Atomic number = 7

Atomic number = Number of protons = Number of electrons = 7

Number of neutrons = Atomic mass number - Atomic number = 14 - 7 = 7

Therefore, the atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

6 0

3 years ago

Human organ systems work together in many ways. Which statement accurately explains the relationship between two body systems?A.

melomori [17]

Answer:

Option D. The nervous system regulates the movement of the muscular system.

Explanation:

The nervous system regulates the movement of the muscles as they receive signals from both the brain and nerve cells

4 0

3 years ago