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
Alex787 [66]
2 years ago
13

What element has an atomic number of 53

Chemistry
2 answers:
Novay_Z [31]2 years ago
6 0
Iodine (I) Plz mark brainliest. HOPE THIS HELPS!
Rasek [7]2 years ago
4 0
Iodine ,which has the chemical symbol of I and atomic mass is 126.90.
You might be interested in
How many electrons does a single hydrogen gain or lose in the following reaction? H 2 + O 2 → H 2 O
wariber [46]

Answer:

  • <u>option </u><u><em>B. Lose 1.</em></u>

Explanation:

To determine the number of<em> electrons that a single hydrogen gains or loses </em>you need to realize that the chemical reaction is an oxidation-reduction (redox) reaction and state the changes in the oxidation states.

The substance that gains electrons is being reduced, reducing its oxidation number, and the substance that lose electrons is being oxidized, increasing its oxidation state.

<u>1) State the oxidation state of hydrogen atoms in the rectant side:</u>

  • H₂: the oxidation state of any element in its atomic or molecular form is zero. That is indicated as a superscript to the right of the chemical symbol: H₂⁰

<u>2) State the oxidation state of the hydrogen atoms in the product side:</u>

  • H₂O: the rule says that the oxidation state of oxygen, when combined with other elements, except in the case of peroxides, is  -2.

        Hence, in order to the molecule H₂O be neutral, the total charge contributed by the two atoms of hydrogen must be + 2: +2 - 2 = 0.

        Since there are two hydrogen atoms, each contributes +2 / 2 = +1 charge.

<u>3) Conclusion:</u>

Every atom of hydrogen changes from a 0 oxidation number to a +1 oxidation number, which, in turn, means that every hydrogen atom loses one electron.

Thus, the answer is, the option <em>B. Lose 1.</em>

3 0
3 years ago
Read 2 more answers
If the radius of the sun is 7.01×105 km, what is the volume of the sun in cm3?
vivado [14]

Answer:

1 km * 1000 m / km * 100 cm / m = 10^5 cm / km

V = 4 / 3 pi R^3

V = 4 / 3 * pi * (7.01 * 10^5 * 10^5)^3 = 4 / 3 pi * 344 * (10^10)^3

V = 1.443^10^3 * 10^30 = 1.44 10^33cm^3

5 0
3 years ago
Write a balanced equation for the dissolution of sodium carbonate (Na2CO3) in water. Find the number of moles of Na+ produced wh
DochEvi [55]

Answer:

in the presence of water H2O

Na2CO3 (S) --> 2Na+ (aq)+ (CO3)2-(aq)

One mole of sodium carbonate produces two moles of Na+ ions

Therefore 0.207 moles produces 0.414 moles of Na+ ions

= 0.414 moles of Na+ ions

Explanation:

In water

Na2CO3 --> 2Na+ (aq)+ (CO3)2-(aq)

In a limited reaction, the carbonate ion reacts with the water molecules as follows

(CO3)2-(aq) + H2O←→HCO3-(aq) + OH-(aq)

sodium carbonate or soda ash dissolves in water to give 2 sodium cations and one carbonate anion

4 0
2 years ago
What do a mole of magnesium and a mole of iron have in common
Vanyuwa [196]
The mole of anything has the same amount of particles and it is equal 
6.02* 10^{23}.

So a mole of magnesium and a mole of iron have the same number of atoms and it is equal
6.02*10²³
6 0
3 years ago
Which of the following pairs of substances can be broken down chemically? 
Ket [755]
Methane and water because they are both compounds
5 0
3 years ago
Other questions:
  • Which of the following best explains why electroplating is a useful process in many industries?
    6·2 answers
  • What is a substance formed when two or more elements combine and lose their distinct properties
    11·1 answer
  • Element Y has two naturally occurring isotopes. The most dominant isotope has a mass of 114.3789 amu and a percent abundance of
    15·1 answer
  • A substance has a triple point at −24.5 ∘C and 225 mmHg. What is most likely to happen to a solid sample of the substance as it
    6·1 answer
  • Is this how you draw a punnet square???
    6·2 answers
  • You and everything around you are made up of matter. What is matter made up of?
    9·2 answers
  • Use the crossover method to find the chemical formula of a calcium oxide
    9·1 answer
  • A 45.0 mL solution of 0.0450 M hydroxylamine is extracted with 125 mL of solvent. The distribution constant for the reaction is
    8·1 answer
  • Why do large area's of water change how the wind blows?
    15·2 answers
  • Can you show me how these are done ? show all work pleaseItem D
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!