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
Anna35 [415]
2 years ago
12

A way of describing a chemical change that indicates what substances were present before the change and what substances are pres

ent after the change is called a _____.
A. chemical equation
B. chemical formula
C. chemical bond
D. All of the above
E. None of the above
Chemistry
1 answer:
musickatia [10]2 years ago
7 0

Answer:

\\ \rm\dashrightarrow Chemical\: Equation

Explanation:

When a chemical change happens or chemical reaction happens something yields at reactants and something at products

Representing them is called chemical equation

You might be interested in
Where are chemicals found in the home?
vodomira [7]

Answer:

c

Explanation:

chemicals can be found in every part of our lives

6 0
3 years ago
Read 2 more answers
When calcium metal (Ca) reacts with oxygen gas (O2), it produces the ionic compound calcium oxide (CaO). Write the balanced equa
malfutka [58]

The balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

and

The process meets the requirements to be considered a redox reaction.

From the question,

We are to write a balanced chemical equation for the reaction between Calcium metal and oxygen gas

The balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

This is the balanced chemical equation for the reaction

To determine whether the reaction meets the requirements to be considered a redox reaction,

We will define the term <em>redox reaction</em>

<em></em>

A <em>redox reaction</em>, also called oxidation-reduction reaction, is any chemical reaction in which the oxidation number of a participating chemical species changes.

From the balanced equation above we can observe that the oxidation number of the participating species(Calcium and oxygen) changed.

The oxidation number of Calcium changed from 0 to +2

and

The oxidation number of Oxygen changed from 0 to -2

∴ The process meets the requirements to be considered a redox reaction.

Hence, the balanced chemical equation for the reaction is

2Ca(s) + O₂(g) → 2CaO(s)

and

The process meets the requirements to be considered a redox reaction.

Learn more here: brainly.com/question/17716543

7 0
2 years ago
Draw the Lewis structure (including all lone pair electrons and any formal charges) for one of the four possible isomers of C3H9
Alexus [3.1K]

Answer and Explanation

The isomer picked is the N-Propylamine.

It has a lone pair of electron available on the electron rich Nitrogen and no formal charge.

Since it will be hard to draw the Lewis structure in this answer format, I'll attach a picture of the Lewis structure to this answer.

The lone pair of electron is shown by the two dots on the Nitrogen atom.

6 0
2 years ago
How many moles of water are present in 55.1 g of H2O
Rashid [163]

Answer:

3.0585147719047385 is the answer

7 0
3 years ago
In performing the "STEP TEST" for 3 minutes, what was your score (your count)? *
MAXImum [283]

Answer:

81

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Provide an appropriate alkyne starting material A and intermediate product B. Omit byproducts. The number of carbon atoms in the
    14·1 answer
  • Sound waves generated in a classroom must _______ through an open doorway in order to propagate into the hallway.
    12·2 answers
  • "the osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant
    14·2 answers
  • What do the elements Nickel and Technetium have in common?
    10·1 answer
  • Jamal is working with three ionic compounds: sodium chloride, calcium sulfide, and barium oxide. His teacher asks him which are
    7·1 answer
  • Sunspots appear dark because they are what ?
    11·1 answer
  • How many moles of a gas will 700 m hold at -100 oC and 86 atm?
    6·1 answer
  • How many grams of water are needed to react with 44.9 grams of li2o?
    10·1 answer
  • Which option best characterizes the following scenario?
    15·1 answer
  • Based on your observations, do you think any of the samples are the same substance?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!