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
tensa zangetsu [6.8K]
3 years ago
10

What is an oxidation number?

Chemistry
1 answer:
STALIN [3.7K]3 years ago
7 0
An oxidation number is the electrical charge a molecule or ion appears to have as determined by a set of arbitary rules.
You might be interested in
Describe how a chemical change follows the law of conservation of matter.<br> give examples pls
Paha777 [63]

Explanation:

In any chemical change, one or more initial substances change into a different substance or substances. ... According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and kind of atoms after the chemical change as were present before the chemical change

Example:

The carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.

5 0
2 years ago
An unknown substance turns blue litmus paper to red. Which additional test could be used to confirm the substance’s identity? It
Vedmedyk [2.9K]
Blue litmus paper turning red means that the solution where the litmus paper was submerged is an acidic solution with a pH of less than 7. Another verification of the nature of the solution is the turning to red of methyl orange in acidic solutions. The answer then is D. 
5 0
3 years ago
Read 2 more answers
Name a physical property of gold (Au)
Lana71 [14]
Gold is a soft metal. Both malleable and ductile
7 0
2 years ago
Read 2 more answers
An atom of sodium-23 (Na-23) has a net charge of
maksim [4K]

Answer:

Protons= 11

neutrons= 12

electrons = 10

Explanantion:

Look for Na on periodic table

Atomic Number = 11

Atomic Mass = 23 (round it to be an integer)

Number of protons = Atomic number = 11

Number of neutrons = Atomic mass - atomic number = 23-11 =12

Number of electrons = 11 - e = ´+1 , electrons = 10

6 0
2 years ago
Calculate the mass of 0.25 mole of carbon dioxide​
Fantom [35]

Answer:

11 g

Explanation:

1 mole of carbon dioxide =44 g

therefore for 0.25 mole = x

x = 44 × 0.25

x = 11.00g

7 0
2 years ago
Other questions:
  • Remember the three roadmaps and how to use them.
    13·1 answer
  • The picture below shows a warm air mass caught between two cooler air masses. What is this type of front called??
    8·1 answer
  • A student places three ice cubes in a beaker and allows them to partially melt. if she measures the temperature of the water in
    10·2 answers
  • What is the chemical formula for iron (III) bicarbonate?
    12·1 answer
  • HCl +KOH ---&gt; KCl + H20
    11·1 answer
  • A cylinder measuring 9.7 cm wide and 12. cm high is filled with gas. The piston is pushed down with a steady force measured to b
    11·1 answer
  • Un anillo, de masa 90 gramos, contiene 59,1% de oro. ¿Cuál es el valor del anillo si cada mol de oro vale S/.1800?. Considere el
    13·1 answer
  • For the reaction shown, calculate how many grams of each product form when the following amounts of reactant completely react to
    10·1 answer
  • Determine the name and formula of a hydrate with the following composition; 32.30%
    10·1 answer
  • 9- Which pair of formulae represents two alkanes? (1 mark)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!