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
Zinaida [17]
2 years ago
7

What indicators of a chemical reaction occurred in the following equation?

Chemistry
1 answer:
ch4aika [34]2 years ago
6 0

Answer:

1) evolution of gas

2) evolution of heat

Explanation:

In this reaction, glucose is broken down into its constituents; carbon dioxide and water. The question is to decipher indicators of a chemical reaction from the equation.

If we look at the equation carefully, we will notice that a gas was evolved (CO2). The evolution of a gas indicates that a chemical reaction must have taken place. Secondly, energy is given off as heat. This is another indication that a chemical reaction has taken place.

You might be interested in
If you had a pot of boiling water that is loosing volume is that at equilibrium? What are some things you can do to a pot of boi
ki77a [65]

Answer:

are you rich in points brother ? or sister ?

8 0
2 years ago
Which of the following statements concerning equilibrium constants is true? The equilibrium constant of the reverse reaction is
Brut [27]

Answer:

When the coefficients in a balanced chemical reaction are multiplied by two, the equilibrium constant is not affected.

Explanation:

The equilibrium constant of a reaction is known to remain steady.

Even if all the coefficients of all the species in the reaction are multiplied by two, the value of the equilibrium constant will reamin the same because the equilibrium position will not change as a result of that.

3 0
3 years ago
How many grams of CO are needed to react with an excess of Fe 2 O 3 to produce 209.7 g Fe?
gavmur [86]

Answer:

Mass = 157.5 g

Explanation:

Given data:

Mass of CO needed  = ?

Mass of Fe formed = 209.7 g

Solution:

Chemical equation:

3CO + F₂O₃   →       2Fe + 3CO₂

Number of moles of Fe:

Number of moles = mass/ molar mass

Number of moles = 209.7 g/ 55.85 g/mol

Number of moles = 3.75 mol

Now we will compare the moles of iron and carbon monoxide.

                               Fe            :              CO

                                 2            :              3

                                3.75         ;             3/2×3.75 = 5.625 mol

Mass of CO:

Mass = number of moles × molar mass

Mass = 5.625 mol × 28 g/mol

Mass = 157.5 g

4 0
2 years ago
What element has three electrons in its 5d sublevel?
Sever21 [200]
C. Ta
Tantalum is an element with an atomic number of 63 and its electronic configuration is:
[Xe] 4f¹⁴ 5d³ 6s²
7 0
3 years ago
Balance this equation K+b2o3=k2o+b
AVprozaik [17]

Answer:

Explanation:

2K and 2b

5 0
2 years ago
Other questions:
  • How many days does the waxing and waning phase of the moon last on average? *
    7·1 answer
  • Write the balanced NET ionic equation for the reaction when AlCl 3 NaOH are mixed in aqueous solution. If no reaction occurs, wr
    9·1 answer
  • A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure o
    15·2 answers
  • The mass of a bowling ball is 5 kilograms what is the mass of a bowling ball in grams?
    11·2 answers
  • Over a long period of time, an igneous rock changes into a sedimentary rock. Which of these actions must have affected the igneo
    14·1 answer
  • In order for rocks to be classified as igneous, the rocks must​
    15·1 answer
  • In an atom how many protons and electrons
    12·2 answers
  • How can you test a mineral for hardness?<br><br> I NEED~ THIS NOW PLEASE
    9·1 answer
  • Question 3 of 10 Which two features are parts of a line graph? D A. A line of best fit B. Anx axis C. A dependent variable OD. A
    15·1 answer
  • How many moles of PC15 can be produced from 58.0 g of Cl₂ (and excess<br> P4)?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!