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
Arlecino [84]
3 years ago
15

What kind of questions can science answer

Chemistry
1 answer:
IrinaK [193]3 years ago
5 0

Answer:

hypothesis

Explanation:

a question that can be answered wity a hypothesis is a question a scientist can answer

You might be interested in
The pka value for the carboxylic acid group in acetic acid is 4.75. write the predominant structure of acetic acid at (a ph=1, (
Scorpion4ik [409]
Hello!

A) At pH=1

This pH is lower than the value for the pKa, so Acetic acid wouldn't be ionized, but the equilibrium would be displaced to CH₃COOH

CH₃COOH ⇄ CH₃COO⁻ + H₃O⁺ (equilibrium displaced to the left)

The chemical structure for CH₃COOH is the first one in the attached images.

B) At pH=7

This pH is higher than the value for the pKa, so Acetic acid would be ionized, and the equilibrium would be displaced to CH₃COO⁻

CH₃COOH ⇄ CH₃COO⁻ + H₃O⁺ (equilibrium displaced to the right)

The chemical structure for CH₃COO⁻ is the second one in the attached images.

Have a nice day!

7 0
3 years ago
Select the correct answer. When an atom in a reactant loses electrons, what happens to its oxidation number? A. Its oxidation nu
vfiekz [6]

Answer:

C. Its oxidation number increases.

Explanation:

  • <em><u>Oxidation is defined as the loss of electrons by an atom while reduction is the gain of electrons by an atom</u></em>.
  • Atoms of elements have an oxidation number of Zero in their elemental state.
  • When an atom looses electrons it undergoes oxidation and its oxidation number increases.
  • For example, <em><u>an atom of sodium (Na) at its elemental state has an oxidation number of 0. When the sodium atom looses an electrons it becomes a cation, Na+, with an oxidation number of +1 , the loss of electron shows an increase in oxidation number from 0 to +1.</u></em>
8 0
3 years ago
Read 2 more answers
How many moles of C2H2 are needed to react completely with 84 mol O2
Butoxors [25]

Balanced chemical equation:

2 C2H2 + 5 O2 = 4 CO2 + 2 H2O

2 moles C2H2 ---------------- 5 moles O2
moles C2H2 ------------------ 84 moles O2

moles C2H2 = 84 * 2 / 5

molesC2H2 = 168 / 5 => 33.6 moles of C2H2
4 0
3 years ago
An object with more mass has more kinetic energy than an object with less mass, if both objects are moving ______.
olasank [31]
At the same velocity
6 0
3 years ago
True or False? Unbalanced forces cause a change in motion <br> T/F <br><br> How do you know this?
Oxana [17]

Answer:

true

Explanation

Unbalanced forces can cause an object to change its motion.If an object is at rest and an unbalanced force pushes or pulls the object it will move. Unbalanced forces can also change the speed or direction of an object that is already in motion.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Make a list of silver current industrial uses. Try to include the approximate annual demand if possible. Create a table to displ
    15·2 answers
  • Football Player Position Mass (kg) Velocity (m/s) Half back 60 8 Tight end 90 6 Full back 110 5 Lineman 120 3 Based on the data
    11·2 answers
  • The half-reactions in a nickel-cadmium (nicad) battery are:
    7·1 answer
  • It is NOT possible for a virus to infect a bacterium. T or F
    10·1 answer
  • For an electrically charged object to repel another object,what must happen.
    5·2 answers
  • Why does spoiled food produce foul smell ​
    15·2 answers
  • Which element is oxidized in the following reaction: 2FeCl₂ + Cl₂→2FeCl₃ if Fe goes from + 2 to +3 and Cl goes from 0 to −2?
    5·1 answer
  • The density of an unknown metal was determined to be 2.85 g/ml. the actual density was 2.70 g/ml. what is the percent error in t
    5·1 answer
  • GUYS PLEASE HELP IM CRYNG
    8·1 answer
  • WILL GIVE BRAINIEST ANSWER A chemical equation has different numbers of atoms on the left and right sides.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!