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
Maurinko [17]
2 years ago
9

Hello people ~

Chemistry
1 answer:
Natalija [7]2 years ago
8 0

Answer:

Opposes the motion

Explanation:

Let's take an example

  • Suppose you kicked a ball and the ball is doing down the ground
  • The friction makes the ball to stop after sometime .
  • So it opposed the ball's motion

option A is correct

You might be interested in
What elements make up water?
Sveta_85 [38]
Water molecules are made of hydrogen atoms and one oxygen atom.

Hope this helped!
5 0
3 years ago
Read 2 more answers
Sort the following analytical techniques as either classical methods or instrumental methods.
Aleonysh [2.5K]

Answer:

Instrumental methods

surface analysis

high performance liquid chromatography

atomic spectroscopy

potentiometry

Classical methods

precipitation titration

gravimetric analysis

Explanation:

Instrumental methods of analysis are those analytical methods in which the responsibility of detection has been removed from human beings and placed on automated instruments while classical methods are those analytical methods in which the responsibility of detection remains the responsibility of human beings.

Many instrumental methods such as HPLC rely on computer screens as readout devices.

6 0
3 years ago
The Lewis dot model of a metal atom has two dots. Which of the following is true about the atom?
nataly862011 [7]

Answer : the statement that is true about the atom is It is present in the second group of the periodic table.

Explanation :

The Lewis dot model shows the number of valence electrons present in the atom.

Since the given metal has 2 dots, it indicates that the metal atom must have 2 electrons in its outermost shell.

Therefore option 2 : It has two electrons in the innermost energy level, is wrong because it contains 2 electrons in the outermost energy level

Option 1 : It is most likely to form covalent bonds is also wrong because a metal atom always forms ionic bond

Option 3 : It requires six other atoms to form a stable compound, is also wrong as the metal can form a stable compound by donating its 2 electrons to a non metal.

On periodic table, representative elements are arranged in groups based on their valence electrons. Therefore by knowing the outermost electrons, we can predict the group in which the element can be categorized.

Since the given metal atom contains 2 electrons, it must be present is second group.

Therefore the statement that is true about the atom is It is present in the second group of the periodic table.

6 0
3 years ago
What oxidation number would you expect an iodide ion to have?
ss7ja [257]

Answer:

Explanation:

An iodide ion is the ion I−. Compounds with iodine in formal oxidation state −1 are called iodides.

4 0
3 years ago
g What is the net yield of NADH when 43 moles of glucose are used to form pyruvate during glycolysis and the pyruvate is reduced
Katarina [22]

Answer:

Net NADH = zero

Explanation:

1 mole glucose

=6.02×10^23molecules

=6.02×10^23 × 2

pyruvates + 2 NADH

43 moles of glucose

= 43×12.04×10^23pyruvates

+43×12.04×10^23NADH

2pyruvates uses 2 NADH molecules

43×12.04×10^23 will use 43×12.04×10^23NADH

Hence net NADH produce is zero.

Which means NADH formed during glucose to pyruvate conversion is utilised during fermentation to regenerate NAD+

4 0
3 years ago
Other questions:
  • Identity which statement is true:
    12·1 answer
  • Which of the following can undergo metamorphosis?
    11·1 answer
  • Calculate the concentration of A bottle of wine contains 12.9% ethanol by volume. The density of ethanol (CH3OH) is 0.789 g/cm e
    12·1 answer
  • The combined gas law sets up a relationship between which of the following?
    8·2 answers
  • How much oxygen molecules are there in a atom?
    14·1 answer
  • 4. define a tsunami
    10·2 answers
  • What is the most important role that water plays for living organisms?
    10·2 answers
  • Some animals that live in extremely cold environments protect themselves from freezing by increasing the molality of certain che
    8·1 answer
  • PLEASE HELPPP!!The property of water that allows it to carry ions to the heart is its:
    15·1 answer
  • 25. 0 ml of a 0. 100 m solution of NH3 is titrated with 0. 250m HCl. After 10. 0 ml of the hcl has been added, the resultant sol
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!