1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrews [41]
3 years ago
14

Which statements about scientific explanations are true? I. Scientific explanations must prove that a hypothesis is true. II. Sc

ientific explanations should be based on evidence or data. III. Scientific explanations must have logical and consistent arguments. IV. Scientific explanations should use scientific principles, models, and theories.
Chemistry
2 answers:
Scilla [17]3 years ago
7 0

Answer:

I. Scientific explanations should be based on evidence or data. III. Scientific explanations must have logical and consistent arguments. IV. Scientific explanations should use scientific principles, models, and theories.

Explanation:

Hypothesis is a proposed explanation for a certain phenomena and it is open for further scientific inquiry. There is no compulsion in science to prove that a given hypothesis is true. In science hypothesis are made, experiments are conducted, observations and data are recorded, data are analyzed and conclusion is reached where a hypothesis is either proven either right or wrong.

Wewaii [24]3 years ago
3 0
All but the first one

You might be interested in
A 800g/cm³ boulder has a density of 8g/cm³ what is the volume
PilotLPTM [1.2K]
6400 cubic centimeters
3 0
3 years ago
Which statement about the orinoco river is true.
WITCHER [35]
Hello,

I think the answer is B) It is second longest river in south america 

Hope this helps!!

~Girlygir101~
3 0
3 years ago
When the products of a reaction have less energy than the reactants
ohaa [14]

Answer:

the energy of the products is less than the energy of the reactants.

Explanation:

the the change is enthalpy is negative, and heat is released to the surroundings.

7 0
2 years ago
In which of these diatomic molecules would you NOT find an octet of electrons
Semmy [17]

Answer:

The hydrogen molecule is the only one in which can not find an octet of electrons around each atom.

Explanation:

Let's evaluate each case.  

1. Nitrogen (N₂):

With Z = 7, nitrogen has the following electronic configuration

1s²

2s² 2p³  → valence electrons

Since its valence electrons are 5, in the molecule one nitrogen atom shares 3 electrons with the other one, and each remains with an electron pair, so <u>each atom has an octet of electrons.</u>

2. Hydrogen (H₂):

With Z = 1, its electronic configuration is:

1s¹  → valence electron

In the molecule, the hydrogen atoms share the only electron they have, so they will have only 2 electrons around. In this diatomic molecule, <em><u>we can not find an octet.</u></em>

3. Oxygen (O₂):

Z = 8. Electronic configuration:

1s²

2s² 2p⁴  → valence electrons

In the diatomic molecule, each oxygen atom shares 2 electrons with the other one and remains with 2 pairs of electrons, therefore, <u>each oxygen atom has an octet</u>.      

4. Fluorine (F₂)

Z = 9. Electronic configuration:

1s²

2s² 2p⁵  → valence electrons

In this molecule, each fluorine atom shares 1 electron with the other and remains with 3 pairs of electrons, hence, <u>each fluorine atom has an octet of electrons around</u>.

Finally, we can say that the hydrogen molecule is the only one in which can not find an octet of electrons around each atom.

I hope it helps you!  

8 0
2 years ago
The scientific method includes which of the following? Select all that apply. question analysis hypothesis theory
adell [148]

a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.


8 0
2 years ago
Read 2 more answers
Other questions:
  • How does glucose get into the mitochondria in autotrophs?
    7·1 answer
  • What’s the largest organ system of the body ?
    9·2 answers
  • Describe the appearance of table salt at the macroscopic and atomic levels
    11·1 answer
  • In reaction CFCl3 + UV Light -&gt; CFCl2 + Cl, there is only one reactant (CFCl3) and no collision
    5·1 answer
  • An atom of 135I has a mass of 134.910023 amu. Calculate the binding energy in MeV per atom. Enter your answer with 4 significant
    7·1 answer
  • Which of the following is a compound? A. Sn B. CO C. H D. Mg
    9·1 answer
  • From smallest to largest put these in order of their atomic radius Mg, Ba,
    5·1 answer
  • Plz PLZ plz PLz Plz Plz Help Plz dont answer if you dont know thank you :)
    10·2 answers
  • Tari serampang dua belas berasal dari​
    15·1 answer
  • Calculate the number of grams in 0.278 moles of H3PO4
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!