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Tatiana [17]
3 years ago
7

All atoms of the same element contain the same number of protons. the atom that has 9 protons can be represented by the symbol?

Chemistry
1 answer:
padilas [110]3 years ago
5 0

It can be represented by atom -9

It would be Fluorine in real..

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An object exerts force of 500 n and sits on an area of 4.5m X 1.5m. Calculate the amount of pressure exerted by the object in to
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4.5 times 1.5

divide by 500n

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3 years ago
Propenoic acid is an unsaturated carboxylic acid. Describe how you could show
Anestetic [448]

Answer:

Tests for unsaturation involves addition across the multiple bonds in the unsaturated compound.

Explanation:

In organic chemistry, we define an unsaturated compound as any compound that contains a double or triple bond. These multiple bonds are also known as pi bonds.

There are two major tests for unsaturation which shall both be discussed here.

The first test for unsaturation is by the use of bromine water. The unknown sample is passed through a solution of bromine water which normally appears reddish brown. The bromine water becomes decolorized due to addition of bromine across the multiple bond. This is a standard test for unsaturation.

Secondly, unsaturated compounds decoulourize a solution of potassium permanganate when passed through it. This alone can not be used as a distinctive test for unsaturation.

Propenoic acid will give a positive test to the both reagents showing that it contains multiple bonds, in this particular instance, a double bond.

4 0
3 years ago
As the pressure on the surface of a liquid decreases, the temperature at which the liquid will boil
ankoles [38]

Answer: option (1) decreases.


Explanation:


May be you have experienced that: when you go to the beach, where the atmposhpere pressure is greater than the atmosphere pressure in places that are at higher altitudes, the water takes longer to boil. That is because the boiling temperature is greater, and you need more total heat (more time) to permit the liquid to reach that temperature.


The reason why that happens is because substances boil when the vapor pressure (the pressure of the particles of vapor over the liquid) equals the atmosphere pressure. So, when the atmposhere pressure increases, the temperature at which the vapor pressure reaches the atmosphere pressure also increases, and when the atmosphere pressure decreases, the temperature at which the vapor pressure reaches the atmosphere pressure decreases.



5 0
3 years ago
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Which of the following is the energy of motion? O Elastic energy O Gravitational energy O Kinetic energy O Potential energy​
Firlakuza [10]

Answer:

kinetic energy

Explanation:

all moving objects have kinetic energy. when an object is an motion it changes its position by moving in a direction: up,down, forward, or backward

8 0
3 years ago
How do the names of covalent compounds differ from the names of ionic compounds?
Tresset [83]
Covalent bonds<span> are named by using prefixes that give the number of atoms of each element in the </span>compound<span>. </span>Ionic compounds<span> are named by replacing the ending of the nonmetal with ate or ite. 6.

plz brain list me 5 star me thank me but thank you

</span>
5 0
3 years ago
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