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STALIN [3.7K]
4 years ago
7

How does flame spread over liquid depend on the flash point?

Chemistry
1 answer:
zvonat [6]4 years ago
6 0
If the liquid is at or above its flash point, the flame spread rate is fast, and the entire pool is engulfed within seconds. ... As the liquid temperature decreases, flame radiation must both heat the liquid to the flash point temperature and supply the heat of vaporization.
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What are characteristics of applied force ?
saul85 [17]

Answer:

An applied force is an interaction of one object on another that causes the second object to change its velocity. A resistive force passively resists motion and works in a direction opposite to that motion. An inertial force resists a change in velocity.

Explanation:

4 0
3 years ago
Sam prepares a solution of sodium chloride with a concentration of 8 g/dm³. If he only used 2g of sodium chloride, what volume o
adoni [48]

The volume of water he dissolved the solute is 250 cubic centimeter.

<u>Explanation</u>:

            Concentration = mass of solute in g / volume in dm^3

The concentration of a solution is defined as the ratio of mass of solute in grams to the volume of water in dm^3.

If concentration of a solution = 8 g/dm^3.

mass of solute =2 g.

Volume of a water = 2 / 8 = 0.25 dm^3. (or) 250 cubic centimeter.

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3 years ago
Who has taken chemistry, if you have I want to know how were you successful (if u were) because currently I am taking it and I’m
Andreas93 [3]

My number one tip is to STUDY! I know it sucks, but once you're in high school, it's going to become a part of your routine every single day. Even if you study right now, keep on doing it over and over and over. Trust me! It'll help. Also, get a tutor! Maybe someone you know is doing well and you could ask them to help, or you could ask a student who was in your class and passed. My number one advice is to just keep working hard. I get it; chemistry is HARD. You'll get there!

5 0
3 years ago
Read 2 more answers
Carbon has four valence electrons, and oxygen has six valence electrons. If carbon and oxygen bond covalently, which of the foll
IRISSAK [1]
According to data the structures are as drawn below. 
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In this case,
6 + 6 + 4 = 16 valence electron
secondly, the central atom is drawn in center and other outside, like carbon in center.
Then single bonds are drawn to connect the central atom to side atoms and 2 electrons for each single bonds are subtracted from total electrons, in this case 16-4=12, these 12 electrons are added to the most electronegative atoms, in this case to oxygen atoms. After that changes are made in a uch a way that each atom gets a complete octet number (8 electrons). 
So, Among these three  structures only the Blue structure is correct because in it each atom has a complete octet. While in other two oxygen or carbon has deficiency of electrons.

8 0
4 years ago
The two weather maps show a front moving across Texas in which of the following cities would a decrease in temperature be predic
Nadusha1986 [10]

Answer:

San Antonio and Dallas Texas

Explanation:

8 0
4 years ago
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