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yulyashka [42]
3 years ago
13

How do ionic bonds form??

Chemistry
1 answer:
mihalych1998 [28]3 years ago
4 0
It is formed when a metal element is chemically combined to a nonmetal. The metal element will form a positive ion and the nonmetal will form a negative ion. They will then combined to form a very strong bond with very strong electrostatic forces between the particles.
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Best way to separate a solid from a liquid what separation technique is needed​
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Filtration is a method for separating an insoluble solid from a liquid.
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12. A helium-filled weather balloon has a volume of 2.4 x 102 L at 99 kPa pressure and a
Luba_88 [7]

Answer:

The answer to your question is 8.74 g of He

Explanation:

Data

V = 2.4 x 10² L

P = 99 kPa

T = 0°C

mass = ?

Process

1.- Convert kPa to atm

P = 99 kPa = 99000 Pa

                   1 atm --------------- 101325 Pa

                    x       ---------------   99000 Pa

                   x = (99000 x 1) / 101325

                   x = 0.977 atm

2.- Convert temperature to °K

°K = 273 + 0

°K = 273

3.- Substitution

      PV = nRT

- Solve for n

      n = PV / RT

      n = (0.977)(2.4 x 10²) / (0.082)(273)

      n = 24.48 / 22.386

      n = 1.093 moles

4.- Calculate the grams of He

          8 g -------------------- 1 mol

           x    -------------------- 1.093 moles

           x = (1.093 x 8) / 1

           x = 8.74 g                      

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A chemical engineer is developing a process for producing a new chemical. One step in the process involves allowing a solution o
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increasing temperature

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A substance has a atomic number of 80.How many protons and electrons do atoms of the substance have ?what is the substance
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Explanation:

Atomic number which is symbolized by "Z" is the number of protons in nucleus of an atom.

Hence,

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If the substance is in its neutral state, which means there is no charge on it, then the number of protons equals to the number of electrons of that element.

Hence,

   number of electrons = number of protons = 80


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Which statement best describes the formation of h20(g)?
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Answer:

wHeRe ArE tHe StAtEmEnTs mAn

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