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stiks02 [169]
4 years ago
6

What electronegative atom do we often associate with polarity? For example, its presence can sometimes increase the polarity of

a compound, but its placement in the molecule is also important.
A. Carbon
B. Hydrogen
C. Oxygen
Chemistry
1 answer:
gogolik [260]4 years ago
8 0
The answer to this question would be B. hydrogen. 

Two polar molecules can make hydrogen bond which was found in many polar molecules.
One example of hydrogen bond would be in the water. Water is a polar molecule with a positive end at the hydrogen side. Hydrogen bond in water is formed by molecule to molecule bond that looks like tetrahedral.
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HELP! WILL MARK BRAINLIEST
Grace [21]
A compound is a substance composed of 2 or more chemical elements.
The model does not represent a compound because it shows two atoms of the same element combined. To be a compound the model would need to contain atoms of different element, represented by different colored balls. Therefore, the picture does not represent a compound. :)
7 0
3 years ago
Read 2 more answers
C3H8 + 5O2 → 3CO2+ 4H2O, if 5.75L of oxygen are consumed in the above reaction, how many L of carbon dioxide are produced?
anzhelika [568]

Answer: 3.45 L carbon dioxide are produced

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given volume}}{\text {Molar volume}}=\frac{5.75L}{22.4L}=0.257moles

C_3H_8+5O_2(g)\rightarrow 3CO_2+4H_2O  

According to stoichiometry :

5 moles of O_2 produce =  3 moles of CO_2

Thus 0.257 moles of O_2 will produce=\frac{3}{5}\times 0.257=0.154moles  of CO_2  

Volume of CO_2=moles\times {\text {Molar volume}}=0.154moles\times 22.4L/mol=3.45

Thus 3.45 L carbon dioxide are produced

6 0
3 years ago
25 g of a chemical is dissolved in 75 g of water. What is the percent by mass concentration of this chemical
Zanzabum

Answer:

300

Explanation:

4 0
3 years ago
Please help Me I really need it
butalik [34]
Can you show the question that goes with those answer pls
7 0
3 years ago
Which of these elements is essential to making up all of the organic molecules?
siniylev [52]
Carbon

Hope this helps (:
5 0
4 years ago
Read 2 more answers
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