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DochEvi [55]
3 years ago
6

An atom of fluorine has an atomic mass of 19 u. Keeping in mind that its atomic number is 9, what can you infer about this atom?

Chemistry
1 answer:
Oliga [24]3 years ago
8 0
The fluorine atom has a neutron number of 10 it also have 10 valence electrons
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The bottom of a box has a surface area of 25.0 cm 2 . The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea
Viktor [21]
Pressure given by: 
Pressure=(force)/(area)
Force=Mass*gravitational pull
Mass=34Kg
gravity=9.80

so,
force=34*9.8=333.2
thus;
pressure=333.2/25=13.328=13.3 N/cm^2

Hope this helped :)
5 0
3 years ago
What is the correct prefix for 6?<br><br> O A. Oct-<br> O B. Hepta-<br> O C. Nano-<br> O D. Hexa-
Alchen [17]

Answer:

Hexa

Explanation:

Enjoy !

4 0
3 years ago
Read 2 more answers
The equation represents the combustion of sucrose. C12H22O11 + 12O2 12CO2 + 11H2O If there are 10.0 g of sucrose and 8.0 g of ox
Vaselesa [24]
<span>0.0292 moles of sucrose are available. First, lookup the atomic weights of all involved elements Atomic weight Carbon = 12.0107 Atomic weight Hydrogen = 1.00794 Atomic weight Oxygen = 15.999 Now calculate the molar mass of sucrose 12 * 12.0107 + 22 * 1.00794 + 11 * 15.999 = 342.29208 g/mol Divide the mass of sucrose by its molar mass 10.0 g / 342.29208 g/mol = 0.029214816 mol Finally, round the result to 3 significant figures, giving 0.0292 moles</span>
7 0
3 years ago
A mixture is made of 40 ml of salt water to 200 ml of solution. What percent of the solution is salt water?
Serggg [28]

Answer:

16.7%

Explanation:

40 ml of salt water + 200 ml of solution = 240 ml

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5 0
3 years ago
Which structural zones exist within the core compositional zone?
Art [367]

The Earth's structural zones (S-Zones) are the lithosphere, asthenosphere, mesosphere, inner core, and outer core.

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Core                      Inner Core           Found about 2,900 kilometers below

the Earth's surface. It is about 2,300 kilometers thick

6 0
3 years ago
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