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
zhannawk [14.2K]
3 years ago
13

Name the part in red: H2 + O2 -> H2O

Chemistry
1 answer:
Lorico [155]3 years ago
7 0

Answer:subscript

Explanation:

You might be interested in
Need help on this question asap pleasee I would really appreciate it
Elza [17]

Answer:

See Explanation

Explanation:

An endothermic reaction is one in which energy is absorbed and the change in enthalpy for the reaction is positive.

If we look at the reaction 2HgO + 45kcal ----> 2Hg + O2; we will notice that

i) 45kcal of energy was taken in (absorbed) for the reaction to occur

ii) The value of the reaction enthalpy is positive

For these two reasons, the reaction is an endothermic reaction as written.

6 0
3 years ago
Describe how particles of iron (Fe) an oxygen (O2) react to how produce oxide (Fe2O3), also known as rust.
forsale [732]

Answer:

Described by a redox reaction below

Explanation:

Iron(III) oxide is an ionic compound, since it consists of a metal, iron, and a nonmetal, oxygen.

Ionic compounds are formed when metals lose their valence electrons in order to have an octet in their previous shell and donate them to nonmetal atoms, so that nonmetals fill their outer shell to have an octet.

As a result, positive ions (cations) and negative ions (anions) are formed. When iron reacts with oxygen, the following reaction takes place:

4 Fe (s) + 3 O_2 (g)\rightarrow 2 Fe_2O_3 (s)

This is a redox (oxidation–reduction) reaction, since we have electron loss and gain. Four iron atoms lose a total of 12 electrons to obtain a +3 charge in the final compound, while 3 oxygen molecules gain these 12 electrons to become 6 oxide anions with a -2 charge.

4 0
3 years ago
PLEASE HELP!!!! <br><br> Draw a representation of John Dalton’s atomic model.
larisa [96]

Answer:

John Dalton's Atomic Model Below ⬇

Explanation:

7 0
3 years ago
How many molecules in 4NH3
Snezhnost [94]

Answer:

16

Explanation:

4 nitrogen (N) atoms and 12 (3×4) atoms in Hydrogen (H)

Total = 4 + 12 = 16 molecules

8 0
3 years ago
50 points plz help
EleoNora [17]

Answer: b

Explanation:

7 0
3 years ago
Other questions:
  • What is the pH of a 5.4 x 10-3 M HCl solution?<br>A. 2.3<br>B. 3.3<br>C. 3.7<br>D. 11.7​
    8·1 answer
  • How many atoms of fluorine are present in a molecule of carbon tetrafluoride CF4
    10·1 answer
  • Neils Bohr published his model of the atomic structure in 1913. He introduced the theory of electrons traveling in orbits around
    15·1 answer
  • I need help for the Newton’s of second law
    7·1 answer
  • 1. How much magnesium oxide is produced if 12.1 g of magnesium reacts with 16 g of oxygen
    5·1 answer
  • To what volume should you dilute 55 mL of 12 M stock HNO3 solution to obtain a 0.145 HNO3 solution?
    11·1 answer
  • Dominic made the table below to organize his notes about mixtures.
    7·1 answer
  • It takes 93.75 mL of a 0.200 M NaOH to neutralize 75.0 mL of an unknown
    7·1 answer
  • Which step you should take before performing a scientific investigation
    11·1 answer
  • Match the following terms:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!