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igor_vitrenko [27]
2 years ago
15

Can you pls tell me advantages and disadvantages of chemistry

Chemistry
1 answer:
pantera1 [17]2 years ago
4 0

Answer:

Every object you touch, see, taste, or smell during the day is a chemical, no matter what the signage says on some containers of “Contains no chemicals.” It would seem to me that knowing as much as possible about these objects would be of benefit to mankind, and hence chemistry becomes of great advantage to us all. The science of chemistry really has no disadvantages, but we humans can be at a disadvantage if we do not bother to learn, for example, that cyanide should not be part of your diet.

I hope it helps :) pls mark as the branliest

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When 40g of ammonium nitrate explode 14g of nitrogen and 8g of oxygen form. How many grams of water form?
blagie [28]

answer and Explanation:

the same amount would have to stay in grams, so if 14 grams of nitrogen is formed, then 8 grams of oxygen, add those two together and you get 22. and that's 22 of the 40 grams used, so 40 su

5 0
3 years ago
4. What is the total mass of ice that can be vaporized by 2100 kJ of heat energy?
anygoal [31]

Answer:

5 g

Explanation:

The heat required to vaporize ice is the sum of

i) Heat required to melt ice at 0°C

ii) Heat required to raise the temperature from  0°C to 100°C

iii) Heat required to vaporize water at 100°C

Thus;

H = nLfus + ncθ + nLvap

H= n(Lfus + cθ + Lvap)

Lfus = 6.01 kJ/mol

Lvap = 41 kJ/mol

c = 75.38

n =?

2100 = n(6.01  + 75.38(100) + 41)

n = 2100 KJ/7585.01 kJ/mol

n = 0.277 moles

Mass of water = number of moles * molar mass

Mass of water = 0.277 moles * 18 g/mol

Mass of water =  5 g

3 0
3 years ago
Briefly describe four ways that a beam can be strengthened?​
lara31 [8.8K]

Answer:

1. Changing Beam Material

2. Corrugation

3. Changing Beam form

4. Steel Reinforcing Bars

Explanation:

Changing Beam Material

Some materials are stronger when used in beams than others. Beams made of steel for instance are stronger than beams made of wood. Therefore changing material can improve the strength of the beam. It is quite important to take into account the weights of the material though as different structures have different requirements.

Corrugation.

You can fold the beam into triangular shapes to increase strength. If you look at roofs you will notice that they are folded and this increased their strength. The same logic can be applied to beams.

Changing Beam Form

Another way to make Beams stronger is to change their form or rather their shape. Straight beams are not as strong as I-beams for instance. I-beams look like the capital letter I with the lines at both ends. I-beams are usually used in construction which shows that they are quite strong.

Steel Reinforcing Bars

When placed in concrete beams, Steel Reinforcing Bars which are also called Rebar can help strengthen a beam by helping it withstand the forces of tension. A concrete beam with Rebar inside it is known as Reinforced Concrete.

8 0
3 years ago
Identify the basic structure of a chemical equation?
antiseptic1488 [7]
It is the crust, the least dense layer.


3 0
3 years ago
If you hold a backpack in your hand, the force of gravity pulls it downward. What force keeps it from falling to the ground?
Deffense [45]

Answer:

The force of the gases pushes downward at the same time that the gases push the rocket upwards. 1.

Explanation:

7 0
2 years ago
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