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Rainbow [258]
3 years ago
7

Which of the following has the most stable nucleus? Fe He U B

Chemistry
1 answer:
Harlamova29_29 [7]3 years ago
3 0

Answer:

Fe

Explanation:

<em>Ferrum</em><em> </em>[Iron] has the most stable nucleus because of <em>binding</em><em> </em><em>energy</em><em> </em><em>per</em><em> </em><em>nucleon</em><em>.</em><em> </em>Although Uranium<em> </em>is<em> </em>another possibility, in this case, it is more radioactive than Iron. It disintegrates very swiftly that all is done so, just to achieve stability.

I hope this helps you out alot, and as always, I am joyous to assist anyone at any time.

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Rank these molecules or groups of molecules by when mammals use them as fuel, from right after a meal through only during starva
Natalka [10]

The question is incomplete: the complete question is:

Rank molecules or group of molecules by when mammals use as fuel, starting right after meal to only through?

starvation.

a) glucose from glucose-2-phosphate from glycogen.

b) free glucose and amino acids

c) fatty acids from triglycerides

d) glucose produced from amino acids in liver.

Answer:

B

A

C

D

Explanation:

Free glucose and amino acid enters into the blood stream directly and can be used immediately after meals by mammals.

The liver stores excess glucose as glycogen, hence when glucose levels begin to reduce in the body, the pancreas releases glucagon which converts glycogen to glucose.

Triglycerides are broken down to give fatty acids which gives much more energy than glucose.

During starvation, amino acids in the liver is converted to glucose when a person goes for days without eating.

6 0
2 years ago
What is the difference between qualitative data and quantitative data?
astraxan [27]
Quantitative data can be counted, measured, and expressed using numbers. Qualitative data is descriptive and conceptual.
7 0
3 years ago
Order the various instruments used for measuring water in this experiment (balances, graduated cylinders, beaker and pipette) fr
lara [203]

Answer:

(Most accurate) pippete>graduated cylinder>beaker>balance (Least accurate)

Explanation:

  1. <em>Most accurate. A pipette prived the most accurate method for delivering a known volume of solution, for example, a 10mL transfer pipette has an accuracy of ±0.02mL</em>
  2. A graduated cylinder is specifically used to deliver a known volume, its typical accuracy is ±1%, this means that a 100ml graduated cylinder is accurate to ±1mL.
  3. A beaker is a multipurpose cylindrical glass mainly used to hold liquids. Even though they are graduated, these marks are an estimation, the beaker's accuracy is around 10%.
  4. Least accurate. A balance measures an object's mass, even though water's density is close to 1, a balance is not the ideal equipment to measure volume, its capacity usually goes between 100-200grams and can measure mass to the nearest ±0.01mg to ±1mg.

I hope you find this information useful and interesting! Good luck!

4 0
3 years ago
An aqueous solution contains 0.100 m naoh at 25.0 °c. the ph of the solution is ________.
ikadub [295]
Recall; pH + pOH = 14
In this case [OH-] =0.100 m
therefore;
pOH = -LOG[OH-]
         = - Log (0.100)
         = 1.00
 Therefore; the pOH is 1.00
And since, pH +pOH = 14
Then pH = 14-pOH
                = 14 -1
                 = 13
Thus the pH is 13.00 
7 0
3 years ago
Argon gas has a boiling point of -197 °C. Which of the following diagrams best represents the
Paha777 [63]

Answer:

(a)

Explanation:

Hello,

In this case, the temperature required to boil argon, it means, transform it from liquid to gas is -197 °C. In such a way, since the temperature inside the steel sphere is -190 °C, which is greater than the boiling point, we realize argon is gaseous, therefore, the molecules will be spread inside the sphere as they will be moving based on the kinetic theory of gases.

For that reason, answer is scheme (a).

Best regards.

6 0
3 years ago
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