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djyliett [7]
2 years ago
8

DDT was banned from use as a pesticide in the United States because

Chemistry
1 answer:
Dmitry_Shevchenko [17]2 years ago
5 0
Too much money and dangerous 
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Consider the reaction; Mg + O2 → MgO Calculate the mass of magnesium oxide possible if 2.5 g Mg reacts with 5.0 g O2?
MAXImum [283]

Answer:

4.15g

Explanation:

Balance the reaction:

2Mg + O2 = 2MgO

Find limiting reactant from the two, by dividing miles with coefficient

2.5/24.3 = 0.103 moles/2 = 0.0515

5/16 = 0.31 moles/2 = 0.156

0.0515 is small than 0.156, so limiting reactant is Mg

Compare the ratio of Mg with MgO

Ratio is 2:2

So same moles = 0.103 moles

Mass = moles x molar mass of MgO

Mass = 0.103 x 40.3

= 4.15g

*please give brainlest*

7 0
2 years ago
Which of the following statements about oudlear energy stre?
Alborosie

Answer:

B

Explanation:

i got it  right on plato

6 0
2 years ago
Is frying an egg a physical or chemical change
Lemur [1.5K]
Chemical change. The heat from frying an egg causes the egg's protein to change permanently in texture and in appearance through a process. 
7 0
3 years ago
Will give medal! What is the reason the group 13 metals have a typical charge of 3+?
Art [367]
My answer:

13 group of the periodic table represented by boron, aluminum and gallium subgroup. It includes gallium, indium, thallium. Typical steper oxidation in the subset gallium 3 is explained by the presence of (n-1)d^10 E-configuration.
Aluminium oxidation degree has +3 an electronic configuration of noble gases S^2P^6

Hope this helps yah!!!
8 0
3 years ago
How many protons, neutrons, and electrons are in Uranium-232? How many protons, neutrons, and electrons are in Uranium-232?
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Protons/Electrons: 92

Neutrons: 140

***REMEMBER: There is always the same amount of protons and electrons. :)

7 0
3 years ago
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