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Artyom0805 [142]
3 years ago
6

98 POINTS! MUST SHOW YOUR WORK for Brainliest!

Chemistry
2 answers:
Ede4ka [16]3 years ago
7 0

Nickel (II) chloride has the chemical formula of NiCl2. So 1 mole of NiCl2 contains 1 mole of Ni atoms.

1 mole contains 6.02*10^23 atoms. So 100 moles of Nickel (II) chloride contains 6.02*10^25 Ni atoms.


Annette [7]3 years ago
5 0

1 mole has 6.02*10^23 molecules in it.

1 nickel (II) chloride molecule, NiCl2, has 1 Ni atom in it.

so 1 mole of nickel (II) chloride molecule has 1 mole of Ni atom in it.

so 100 moles of nickel (II) chloride molecule has 100*6.02*10^23

= 6.02*10^25 Ni atom in it.


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Which of these elements is unlikely to form covalent bonds? s, h, mg, ar, si?
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<span>Answer: K because it is metal and typically forms ionic bonds. Ar is also unlikely to form any bonds because it has a full outer shell of electrons, but it can form covalent bonds.</span>
4 0
3 years ago
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777 Joules of energy are applied to 25.0 grams of each of the following materials, which
4vir4ik [10]

Answer:

I think copper

Explanation:

Material IACS % Conductivity

Silver                105

Copper            100

Gold               70

Aluminum         61

Nickel              22

Zinc                          27

Brass                  28

Iron                        17

Tin                      15

Phosphor Bronze  15

Lead                      7

Nickel Aluminum Bronze 7

Steel                   3 to 15

the table might help- your indian brother

3 0
2 years ago
According to kinetic-molecular theory, which of the following would not be considered an ideal gas? Check all that apply.
Vikki [24]

Answer:

are a gas at very low volumes, when gas particles are very close together

a gas at very low temperatures, when gas particles have very little kinetic energy

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Explanation:

4 0
3 years ago
Read 2 more answers
Part A:
uranmaximum [27]

Answer:

Part A = The mass of sulfur is 6.228 grams

Part B = The mass of 1 silver atom is 1.79 * 10^-22 grams

Explanation:

Part A

Step 1: Data given

A mixture of carbon and sulfur has a mass of 9.0 g

Mass of the product = 27.1 grams

X = mass carbon

Y = mass sulfur

x + y = 9.0  grams

x = 9.0 - y

x(molar mass CO2/atomic mass C) + y(molar mass SO2/atomic mass S) = 22.6

(9 - y)*(44.01/12.01) + y(64.07/32.07)

(9-y)(3.664) + y(1.998)

32.976 - 3.664y + 1.998y = 22.6

-1.666y = -10.376

y = 6.228 = mass sulfur

x = 9.0 - 6.228 = 2.772 grams = mass C

The mass of sulfur is 6.228 grams

Part B

Calculate the mass, in grams, of a single silver atom (mAg = 107.87 amu ).

Calculate moles of 1 silver atom

Moles = 1/ 6.022*10^23

Moles = 1.66*10^-24 moles

Mass = moles * molar mass

Mass = 1.66*10 ^-24 moles *107.87

Mass = 1.79 * 10^-22 grams

The mass of 1 silver atom is 1.79 * 10^-22 grams

5 0
2 years ago
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What are the carbon (C) and oxygen (O) in carbon dioxide (CO2)?
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A. Atoms. Because I learned this in 6th grade.
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