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Juliette [100K]
4 years ago
5

2. How many mi hr is 30km/s?​

Chemistry
1 answer:
dalvyx [7]4 years ago
4 0

The answer is 67 108.0888km/s.

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For main-group elements using the older numbering system the group number on the periodic table corresponds to which characteris
eduard
The Group number and period number corresponds to the outer most shell and number of electrons present in outer most shell.

For Example:

Oxygen has atomic number 8, and its electronic configurations is,

                                    1s², 2s², 2pₓ², 2py¹, 2pz¹

The outermost shell is 2, means oxygen is present in period 2, and the number of electrons in n = 2 are 6, so the group number is 6 in periodic table.

Lets take another example of Sodium, it has atomic number 11 with electronic configuration;

                                         1s², 2s², 2p⁶, 3s¹

The outermost shell is 3, means sodium is present in period 3, and the number of electrons in n = 3 are 1, so the group number is 1 in periodic table.
6 0
3 years ago
What is the molarity of an acid that is made up of 9.5 moles of HCl dissolved in 1:24 L of water?
KIM [24]

Answer:

7.7 mol/L or M

Explanation:

Molarity is defined as moles of solute over litres of solution. So, in essence, Molarity= moles/litres

or often written as M=mol/L

Here we have 9.5 moles of HCl, and 1.24L of water so we just plug those in equation...

M= 9.5/1.24 = 7.7 mol/L or M

8 0
4 years ago
Please help me due tomorrow
Dvinal [7]

  1. G
  2. A
  3. C
  4. I
  5. F
  6. D
  7. E
  8. B
  9. J

Explanation:

this are answers

6 0
3 years ago
The skeletal structure in line-angle (line-bond) mode of 2,3,3,5-tetramethylhexane is shown. Identify the number of hydrogen ato
Kruka [31]

Answer:

There are 22 hydrogen in 2,3,3,5-tetramethylhexane (C10H22)

From the left to the right of the skeletal structure:

1st Main Carbon = 3 hydrogen

2nd Main Carbon = 1 hydrogen

1st Branch Carbon = 3 hydrogen

3rd Main Carbon = 2 hydrogen

2nd Branch Carbon = 3 hydrogen

3rd Branch Carbon = 3 hydrogen

4th Main Carbon = 0 hydrogen

4th Branch Carbon = 3 hydrogen

5th Main Carbon = 1 hydrogen

6th Main Carbon = 3 hydrogen

Total = 22 hydrogen

Explanation:

This is the skeletal formula for 2,3,3,5-tetramethylhexane - the 2D chemical structure. It is an organic compound. The carbon atoms in the structure are known as the carbon backbone. The hydrogen atoms are linked to the carbon backbone. This provides each carbon atom with four bonds.

6 0
3 years ago
A cannonball made of iron has a volume of 121 cm3. What is the mass, in kilograms, of the cannonball? Express your answer to thr
Veseljchak [2.6K]

Answer:the mass is 35456

Explanation:

because it works

4 0
3 years ago
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