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Kitty [74]
3 years ago
7

4. For water, H20 represents

Chemistry
1 answer:
timama [110]3 years ago
3 0

Answer:

The empirical and molecular formula because the ratio is 2:1 <em>and </em>there is 2 hydrogen atoms and 1 oxygen atom.

Hope this helps!

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2) Which liberates the most energy?
evablogger [386]

Answer: F(g)+e^-\rightarrow F^-(g)

Explanation:

Electron gain enthalpy is defined as energy released on addition of electron to an isolated gaseous atom.  

The amount of energy released will be maximum when the tendency to attract electrons is maximum. As flourine has atomic number of 9 and has electronic configuration of 2,7. It can readily gain 1 electron to attain stable noble gas configuration and hence liberates maximum energy.

F(g)+e^-\rightarrow F^-(g)

4 0
3 years ago
Which of the following is not an example of a polymer?
Nady [450]
I believe the correct answer from the choices listed above is the third option. It is amino acid that is not an example of a polymer. It <span> is a large molecule, or macromolecule, composed of many repeated subunits. Hope this answers the question.</span>
7 0
3 years ago
What volume is needed to store 0.80 moles of helium gas at 204.6 kpa and 300 k?
shepuryov [24]
Answer is: 9,7 L is needed to store helium gas.
n(He) = 0,80 mol.
p(He) = 204,6 kPa.
T = 300 K.
R = 8,314 J/K·mol; universal gas constant.
Use ideal law eqaution: p·V = n·R·T.
V = n·R·T / p.
V(He) = 0,80 mol · 8,314 J/K·mol · 300 K ÷ 204,6 kPa.
V(He) = 9,75 L.


3 0
3 years ago
Which of these would have particles with the highest kinetic energy?
miv72 [106K]

Answer:

water vapor

Explanation:

because gas molecules moves the fastest

6 0
3 years ago
Read 2 more answers
A certain metal forms a bromide containing percent by mass. what is the chemical formula of the compound?
77julia77 [94]

Answer:

w w w . g o o g l e . c o m

Explanation:

3 0
1 year ago
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