A farmer had an accident and spilled a chemical into his pond. Several days later, he notices many dead frogs around the pond. That summer, the number of gnats around the pond was higher than ever. This is becausea. the chemical is good for the gnats.
b. the frogs are a limiting factor for the gnats.
c. the gnats are a limiting factor for the frogs.
d. the chemical is a limiting factor for the gnats.
Answers
Answer:
The correct answer is option b.
Explanation:
A limiting factor or limiting reagent is a compound of reactant which gets used up first and effects the formation of product in a chemical reaction.
Around the pond frog would be feeding on gnat, and due to their presence population of gnats were in control .But due to accidental spilling of chemical in pond resulted in death of frogs. Which were actually responsible for less population of gnats around the pond but due to dead action of chemical on them (frogs) their population in pond declined due to which increase in population of gnats was observed.
On generalizing this fact:
- Higher the population of frogs lower will be the population of gnats.
- lower the population of frogs higher will be the population of gnats.
So, from this we can conclude that frogs are the limiting factors for the gnats as more the number of frogs lessor will be number of gnats.
the frogs limit the reproduction of the gnats, and therefore with less frogs the gnat population can increase
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Answers
Final answer:
Gallium-69, an isotope of Gallium, contains 31 protons, 31 electrons and 38 neutrons.
Explanation:
Gallium-69 is a specific isotope of the element Gallium.Gallium is the element with atomic number 31 on the periodic table. This atomic number means that a Gallium atom has 31 protons in its nucleus. Given that in a neutral atom the number of electrons equals the number of protons, we can also deduce that Gallium-69 contains 31 electrons.
The number following the name of the element, 69 in this case, is the isotope's mass number, which is the total number of protons and neutrons that an atom of that isotope contains in its nucleus. To find the number of neutrons in Gallium-69, you simply subtract the number of protons from the mass number. This yields 69 - 31 = 38. Thus, Gallium-69 has 38 neutrons.
Learn more about Gallium-69 here:
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Answers
C = Celsius
K = k=Kelvin
C + 273.15 = K
200 + 273.15 = K
473.15 = K
200 + 273.15 = 473.15 Kelvins
Protons are located in the nucleus.
Electrons form a cloud around the nucleus.
Neutrons orbit the nucleus along circular paths.
Answers
Answer:
its c because i took the test
Explanation:
Answers
Explanation:
Matter in which molecules have strong force of attraction are held tight together. Therefore, to break this force of attraction strong force is required.
This type of matter is know as solid. Also, it is known that solid substances have definite shape and volume.
Thus, we can conclude that a substance with a definite shape and volume is a solid phase of matter.
3.0 x 10^22
6.0 x 10^23
3.0 x 10^24
Answers
Answer: Option (b) is the correct answer.
Explanation:
According to the mole concept there are atoms present in 1 mole of a substance.
Mathematically, 1 mole = atoms or molecules
Therefore, number of atoms present in 0.05 moles of xenon are as follows.
= atoms
or, = atoms
Thus, we can conclude that there are atoms present in 0.05 moles of xenon gas at STP.
(0.05mol Xe)(6.02x10^23 atoms) = 3.0x10^22 atoms Xe