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faust18 [17]
3 years ago
9

Choose the statement that best describes a hypothesis.

Biology
1 answer:
Anvisha [2.4K]3 years ago
7 0

Answer:

B: An educated guess about something in an experiment.

Explanation:

A hypothesis is when you take information you already know and make an assumption to what you think will or won't happen.

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Anyone know the answer
inessss [21]

Answer:

b.nuclear energy to heat energy to electrical energy

4 0
3 years ago
4. Which of the following elements does not want to have eight valence electrons? a. magnesium c. hydrogen b. oxygen d. nitrogen
Cloud [144]

Answer:

Hydrogen.

Explanation:

Hydrogen is the simplest chemical element that exists. The symbol for the chemical element Hydrogen is "H" and it is a colourless, tasteless, odorless, and highly flammable gas.

Hydrogen is a chemical element found in group (1) of the periodic table and as such it has one (1) electrons in its outermost shell. Therefore, Hydrogen has an atomic number of one (1) and a single valence electrons because it has only one proton and one electron in its nucleus.

Based on the octet rule which states that atoms of chemical elements gain, lose or share electrons so as to have eight (8) electrons in their valence shell. Therefore, atoms of chemical elements bond in order to attain the electronic configuration of a noble gas i.e a full valence shell which comprises of eight (8) electrons.

However, the chemical element "Hydrogen" is an exception to the octet rule because it is only able to hold a maximum of two (2) valence electrons in its outermost shell to become full.

<em>Hence, Hydrogen is an element which does not want to have eight valence electrons. </em>

7 0
3 years ago
Assuming that the collision factor remains the same, by how much must an enzyme lower the activation energy of the reaction in o
Anestetic [448]
(8.314 J/molK)(310K)ln(3E5) = E-EcatE-Ecat 
<span>=32504.22 J/mol = 32.504 KJ/mol (pay attention to any requirement on sig fig)

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
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3 0
3 years ago
Read 2 more answers
100 POINTS 7TH GRADE SCIENCE QUESTIONS
Doss [256]
14. A. Pathogens. Includes all types of harmful organisms.
15. A. Immune.
16. C.
17. A.
18. D.
19. A.
20. D.

8 0
4 years ago
Read 2 more answers
Why is copper considered a very good thermal conductor?
Lelechka [254]

Answer: A. It conducts heat well.

Explanation:

Copper is a good conductor of heat. This means that if you heat one end of a piece of copper, the other end will quickly reach the same temperature.

5 0
3 years ago
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