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
GarryVolchara [31]
3 years ago
9

Using the reactivity series of metals, classify which would be the cathode in a reaction involving these two metals as electrode

s.
Na or Ca?

Chemistry
2 answers:
Georgia [21]3 years ago
8 0

Answer: Na or Ca?

Explanation:

babymother [125]3 years ago
4 0

Answer:

Calcium will be the anode and sodium will be the cathode

Explanation:

I know that your confusion stems from the relative positions of the two metals in the activity series but I want you to get something clearly. Sodium metal is more reactive than calcium metal but calcium ion is more reactive (a better reducing agent) than the sodium ion.

Hence, in an electrochemical cell, a better reducing agent will function as the anode. This is why calcium is the anode in the cell mentioned in the question. Calcium ion has a reduction potential of -2.87 V while sodium ion has a reduction potential of -2.71 V, hence the answer.

You might be interested in
What is a cylinder? Give an example of an<br> object that's a cylinder.
amid [387]
By definition a cylinder is a solid geometric figure with straight parallel sides and a circular or oval cross-section. A good example of a cylinder would be a soda can.
8 0
3 years ago
Read 2 more answers
Please help!!
Olegator [25]
Molarity =  Moles/Liter

Use the molecular atomic mass of NaCl to convert from grams to moles.
Molecular mass of NaCl is the sum of its atomic masses. Look at the periodic table to find these. Na is 23 g/mol and Cl is 35.5 g/mol ,
so NaCl = 23 + 35.5 = 58.5 g/mol

multiply to cancel out grams
76 g NaCl * (1mol / 58.5 g NaCl) = 1.3 mol NaCl

over 1 Liter is just 1.3 M NaCl
Hope this helps!
8 0
3 years ago
Use the particle theory to describe each of the three states of matter.
Anna007 [38]
Matter can exist in one of three main states: solid, liquid, or gas. Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. ... Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume.
7 0
2 years ago
As the number of protons increases but the distance between the protons and electron REMAINS THE SAME...
Aloiza [94]

Answer:

The correct option is;

The electronegativity increases

Explanation:

The electronegativity is the measure of an atom's ability to attract a shared electron pair. The electronegativity of an atom is dependent on the atom's atomic number and the separation distance between the electrons in the valence shell and the positively charged nucleus such that an increase in the atomic number results in an increase in electronegativity and an increase in the distance between the valence electrons and the nucleus, leads to a decrease in electronegativity.

8 0
3 years ago
Summarize: Complete the following statements:
egoroff_w [7]

Answer:

Explanation:

Taking into account the definition of Avogadro's Number, the correct answers are:

1 mole of any element contains 6.023×10²³ atoms

1 mole of any compound contains 6.023×10²³ molecules

You have to know that Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole.

Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression.

Avogadro's number applies to any substance, because the number of elementary units in a mole of a substance is, by definition, a  constant that does not depend on the material or the type of particle considered.

So, in this case, the correct answers are:

1 mole of any element contains 6.023×10²³ atoms

1 mole of any compound contains 6.023×10²³ molecules

hope that help you mark me as brinilylist pls

4 0
2 years ago
Other questions:
  • Calculate the atomic mass of gallium, symbol Ga. Gallium has two isotopes: Ga-69 and Ga-71. The relative abundance of Ga-69 is 6
    12·1 answer
  • How many moles of oxygen gas would be needed to react completely with 8 moles of lithium metal in the following reaction?
    9·1 answer
  • When work is done on an object, the amount of ________ it has changes.
    13·1 answer
  • HELP!!!! PLEASE, it would be much appreciated.
    10·2 answers
  • What is the significance of an electronegativity difference of 1.7 between 2 atoms?
    11·2 answers
  • Which of the following is NOT a type of mucle tissue?
    11·2 answers
  • Which of the following is/are true?
    10·1 answer
  • Which substance would require the most energy to heat 10.00 g of it by 10.0°C?
    11·1 answer
  • Which scientist was the first to devise the rules of chemical reactions that are explained by modern atomic theory?
    5·1 answer
  • What product is obtained from the reaction of sulfuric acid acetic acid and 1 pentanol.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!