CHEMISTRY HIGH SCHOOL

What type of element is chlorine? metal.
alkaline earth metal.
halogen.
inner transition metal.

Answers

Answer 1
Answer:

Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, chlorine belongs to halogen family.

What is element?

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.

Chlorine  is a Halogen. These are all elements in Group 17 (right next to the Nobel Gases). Atomic number of chlorine is 17. Chlorine needs only one electron to completes its octet. Chlorine exist as gas.

Therefore, chlorine belongs to halogen family.

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Answer 2
Answer: It is a Halogen. These are all elements in Group 17 (right next to the Nobel Gases)

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A solution containing large amount of solute in comparison to solvent is... A ) aqueous,b. concentrated,
c. Diluted, and
d. soluble

Answers

A solution containing large amount of solute in comparison to solvent is concentrated. Meaning the solute's concentration is high. The answer to this question is letter "B" or "B. Concentrated". I hope this helps you on your assignment. 

the answer will be b)

Why could a recycling or recovery machine using a hermetic compressor overheat while in deep vacuum?

Answers

Answer:

Explanation:fsthy add

How do you find the name of the chemical formula Pb3N4 (the 3 and 4 are subscripts)

Answers

This is a salt because there is a cation and an anion.  Because lead can have multiple charges, its charge must correspond to the charge of the anion.  The charge on the N is -3, so the 4 N's equal a total charge of -12. Therefore, the total charge of the 3 Pb's must be 12, so each lead should have a charge of +4.  So the name of the compound is Lead (IV) Nitride. 

Final answer:

The name of the chemical compound Pb3N4 is Lead (IV) Nitride. The number of atoms of each element in the compound is represented by the subscript numbers, and the '-ide' suffix is used for the non-metal (Nitrogen). The Roman numeral indicates the oxidation state of Lead.

Explanation:

The chemical formula Pb3N4 corresponds to a compound made up of Lead (Pb) and Nitrogen (N). The subscript numbers (3 and 4) denote the number of atoms from each element present in the compound. Considering that Lead is a metal and Nitrogen is a non-metal, we use the '-ide' suffix for the non-metal in the name of the compound. Therefore, the name of Pb3N4 is Lead (IV) Nitride. The Roman numeral (IV) indicates the oxidation state of Lead in the compound.

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How do electrons populate atoms?

Answers

Electrons fill the electron orbitals (s, p, d, or f) starting from the lowest energy level going to the highest energy level. I hope this helps. let me know if you need more information such as what the

Atoms gain or lose electrons to increase:a. reactivity
c. stability
b. nucleus size
d. atomic mass

Answers

Atoms gain or lose electrons toincrease their stability. The answer is letter C. Remember noble gases? Theyfollow the octet rule in which their shells are electrons are filled with eightelectrons. So the atoms that do not belong to the noble gas tend to berestless. They want their electrons to be filled to follow the octet rule. Thatis why they tend to share or gain electrons. Suppose you have a compound ofCCl4. You know that chlorine can only share 1 electron because 7 of itselectrons are filled. Also, in carbon, it can only share 4 electrons because 4of it are already filled. That is why carbon needs four chlorine to form CCl4.

If 20 milliliters of 4.0 M NaOH is exactly neutralized by 20 milliliters of HCL, the molarity of the HCL is

Answers

Volume of NaOH = 20 mL / 1000 = 0.02 L

Molarity NaOH = 4.0 M

number of moles NaOH :

n = M * V

n = 4.0 * 0.02

n = 0.08 moles of NaOH:

Finally we calculate the number of moles of HCl in the solution from the stoichiometry of the reaction :
HCl + NaOH = NaCl + H₂O

1 mole HCl ---------- 1 mole NaOH
? moles HCl --------- 0.08 moles NaOH

moles HCl = 0.08 * 1 / 1

= 0.08 moles of HCl

Volume of HCl = 20 mL / 1000 = 0.02 L

M ( HCl ) = n  / V

M = 0.08 / 0.02

= 4.0 M

hope this helps!

Answer:

4.0

Explanation:
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