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otez555 [7]
3 years ago
11

Using the graphs below, which group of moths is better adapted to survive the hunting cycle?

Chemistry
1 answer:
kolbaska11 [484]3 years ago
3 0
I don't know the details of the individual
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Atom A has five protons, four neutrons, and five electrons. Atom
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Answer:

they are the same element because they have the same number of protons and electrons,but a different number of neutrons

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How likely is it that a scientific theory is correct?
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It all depends what theory it is most are supported by really good evidence but they just don't have all the evidence so it can't be proven a fact at that time

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A sample of vinegar has a hydronium concentration of 1.6 × 10-3 M. What is the pH of the vinegar?
loris [4]
PH is defined as the negative log of Hydronium Ion concentration.

So, in order to find the pH of vinegar, we find the negative log of its hydronium ion concentration.

pH=-log[ H_{3}O^{+}] \\  \\ 
pH=-log(1.6  * 10^{-3})  \\  \\ 
pH=2.8

So, the pH of given vinegar solution will be 2.8.

Therefore, the answer to this question is option B
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3 years ago
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What is the relationship between an atom and a molecule?
musickatia [10]

Answer:

Atoms are given a different weight based on the number of protons and neutrons in the nucleus and electrons in the surrounding cloud. The same electromagnetic force that keeps a single atom together can also hold two or more atoms together to form a molecule, while numerous molecules join together to form matter.Apr 25, 2017

Explanation:

4 0
3 years ago
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If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?
krok68 [10]

Answer:

\large\boxed{\large\boxed{0.64M}}

Explanation:

When you form a <em>diluted solution</em> from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

          \text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}

Substitute and solve for the molarity of the diluted solution:

           250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M

8 0
3 years ago
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