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Aliun [14]
3 years ago
6

Which of the following would not have the same number of valence electrons as the others?

Chemistry
2 answers:
Luba_88 [7]3 years ago
8 0

Answer:

Carbon

Explanation:

Carbon has 4 valence electrons while the other ones have 6.

I appreciate it if you could mark me as Brainliest!

Fantom [35]3 years ago
5 0

carbon won't have same number of valence electrons as others

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If a 0.7 M solution of Ca(OH)2 dissociates completely in water, what is the<br> final [OH-]?
IceJOKER [234]

Answer:

1.40 M [OH⁻]

Explanation:

This compound dissociates into 3 ions, but since we are asked about [OH⁻], it's only 2. Therefore, multiply the molarity of the solution by the number of ions that [OH⁻] dissociates into:

2 × 0.70 M = 1.40 M

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3 0
3 years ago
Mass of nitrogen 14?
Troyanec [42]

The average atomic mass of N2 is 14.0067. The atomic masses of the 2 stable isotopes of nitrogen, N-14 and N-15, are14.003074002 and 15.00010897 amu, respectively. Calculate the percent abundance of each nitrogen isotope. Ex.: The average atomic weight of copper is 63.5amu .

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6 0
3 years ago
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This stadium can hold 100,000, or 1 x 105, people. The number of atoms in a grain of iron is about 1 x 1018. Would you need 1 x 
nata0808 [166]
<h3>Answer:</h3>

1 x 10^13 stadiums

<h3>Explanation:</h3>

We are given that;

1 stadium holds = 1 × 10^5 people

Number of iron atoms is 1 × 10^18 atoms

Assuming the stadium would carry an equivalent number of atoms as people.

Then, 1 stadium will carry 1 × 10^5 atoms

Therefore,

To calculate the number of stadiums that can hold 1 × 10^18 atoms we divide the total number of atoms by the number of atoms per stadium.

Number of stadiums = Total number of atoms ÷ Number of atoms per stadium

                                  = 1 × 10^18 atoms ÷ 1 × 10^5 atoms/stadium

                                   = 1 × 10^13 Stadiums

Thus, 1 × 10^18 atoms would occupy 1 × 10^13 stadiums

7 0
3 years ago
2. Just like the N and S poles on bar
maksim [4K]

Answer:

A) attract

Explanation:

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3 0
3 years ago
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If an object has a mass of 25g and a volume of 5cm what is the density ​
sergij07 [2.7K]

Density= 5m^3

Explanation:

Here, the Mass of an object is 25g

To convert grams into kilograms, we need to divide 25 by 1000

so, the 25g=25/1000 = 0.025kg.

The volume of an object is given by 5cm^3 ( cubic centimetre)

To convert cubic centimetre to meter cube, we need to divide 5 by 1000.

So, 5cm^3=5/1000=0.005m^3

Finally, the equation of density is

DENSITY= MASS/VOLUME

Density = 0.025/0.005

            = 5m^3

Hence, the density of the object is  5m^3.

5 0
3 years ago
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