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Kobotan [32]
3 years ago
7

What metal has 95 protons Lead, mercury, americium, or francium?

Chemistry
1 answer:
UkoKoshka [18]3 years ago
5 0

Americium

Explanation:

The metal with 95 protons is Americium. The number of protons in an atom is very unique.

  • The number of protons is called atomic number.
  • The periodic table of element is sorted based on the number of protons i.e atomic numbers each element have.
  • Checking the periodic table, Americium is located in the f-block on the periodic table.
  • It has an atomic number of 95.

Learn more:

Periodic table brainly.com/question/8543126

#learnwithBrainly

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Answer:

I think the answer is B or Compounds

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What travels through a food chain or web.
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3 years ago
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Explain how you determine the freezing point of a solution that does not have a well-defined transition in the cooling curve.
Sophie [7]

This question is asking for a method for the determination of the freezing point in a solution that does not have a noticeable transition in the cooling curve, which is basically based on a linear fit method.

The first step, would be to understand that when the transition is well-defined as the one on the attached file, we can just identify the temperature by just reading the value on the graph, at the time the slope has a pronounced change. For instance, on the attached, the transition occurs after about 43 seconds and the freezing point will be about 4 °C.

However, when we cannot identify a pronounced change in the slope, it will be necessary to use a linear fit method (such as minimum squares) to figure out the equation for each segmented line having a significantly different slope and then equal them so that we can numerically solve for the intercept.

As an example, imagine two of the segmented lines have the following equations after applying the linear fit method:

y=-3.5 x + 25\\\\y=-0.52 x + 2

First of all, we equal them to find the x-value, in this case the time at which the freezing point takes place:

-3.5 x + 25=-0.52 x + 2\\\\-3.5 x+0.52 x =2-25\\\\x=\frac{-23}{-2.98}=7.72

Next, we plug it in in any of the trendlines to obtain the freezing point as the y-value:

y=-3.5 (7.72) + 25\\\\y = 1.84

This means the freezing point takes place after 7.72 second of cooling and is about 1.84 °C. Now you can replicate it for any not well-defined cooling curve.

Learn more:

  • brainly.com/question/22818252
  • brainly.com/question/9680530

7 0
3 years ago
The mass of Carbon is 12 g/mol and the mass of oxygen is 16 g/mol. What is the approximate percent composition by mass of CO2 (f
nikitadnepr [17]

Answer:

the last one

27% by 73%

Explanation:

12/44*100 for C

and

16/44*100 for O

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timurjin [86]

the answer is The average kinetic energy of the surrounding air particles increases.


                   hope it helps


7 0
3 years ago
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