Answer is: halogens ans noble gases.
The nonmetals are divided into two categories: reactive nonmetals and noble gases.
Halogen elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.
Noble gases are in group 18: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). They have very low chemical reactivity.
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Answer: B) explanation of why the pesticide is toxic to organisms.
Explanation:
Pesticide is a chemical or biological substance which is required to kill the population of pests and which are harmful and affecting the life cycle of the plants.
The structure of pesticide is required to be known so as to get information of the chemical or biological agent present in these pesticides. This can help in determining the fact that which ion or molecules directly cause harm to the body of pests by releasing the toxicity.
Answer:
The value for this reaction at 1181 K is .
Explanation:
The expression of an equilibrium constant in terms of partial pressure can be given as:
Total pressure of the gases at equilibrium = P = 69.4 Torr
Partial pressure of hydrogen gas =
Partial pressure of water vapor =
(Dalton's law of partial pressure)
x = 69.4 Torr - 53.7 Torr = 15.7 Torr
The value for this reaction at 1181 K is .
Answer:
We can see the bright matter, like stars, but we know some other matter is there(dark matter)because of how it pulls on the bright matter.
Explanation: