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
Andru [333]
3 years ago
7

The substances present before a chemical reaction takes place are called?

Chemistry
2 answers:
andrew11 [14]3 years ago
5 0
The substances present before the reaction are the reactants.  (As the reaction goes through, the substances that are produced are called the products of the reaction).
jeka57 [31]3 years ago
5 0
Reactants. just did the penn foster exam
You might be interested in
Which of these is the final result of secondadry succession?
Grace [21]

Answer:

a

Explanation:

ADAPTATIOnn but if thhere would be an option o all the above it would be that

5 0
3 years ago
Read 2 more answers
Chemistry Stoichiometry Question
Zielflug [23.3K]

The correct answer is 1.1 moles

8 0
3 years ago
Which of the followings is true about G0'? A. G0' can be determined using Keq' B. G0' indicates if a reaction can occur under no
nekit [7.7K]

Answer:

A and D are true , while B and F statements are false.

Explanation:

A) True.  Since the standard gibbs free energy is

ΔG = ΔG⁰ + RT*ln Q

where Q= [P1]ᵃ.../([R1]ᵇ...) , representing the ratio of the product of concentration of chemical reaction products P and the product of concentration of chemical reaction reactants R

when the system reaches equilibrium ΔG=0 and Q=Keq

0 = ΔG⁰ + RT*ln Q → ΔG⁰ = (-RT*ln Keq)

therefore the first equation also can be expressed as

ΔG = RT*ln (Q/Keq)

thus the standard gibbs free energy can be determined using Keq

B) False. ΔG⁰ represents the change of free energy under standard conditions . Nevertheless , it will give us a clue about the ΔG around the standard conditions .For example if ΔG⁰>>0 then is likely that ΔG>0 ( from the first equation) if the temperature or concentration changes are not very distant from the standard conditions

C) False. From the equation presented

ΔG⁰ = (-RT*ln Keq)

ΔG⁰>0 if Keq<1 and ΔG⁰<0 if Keq>1

for example, for a reversible reaction  ΔG⁰ will be <0 for forward or reverse reaction and the ΔG⁰ will be >0 for the other one ( reverse or forward reaction)

D) True. Standard conditions refer to

T= 298 K

pH= 7

P= 1 atm

C= 1 M for all reactants

Water = 55.6 M

5 0
3 years ago
Why can filtration not be used to seperate a mixture of 2 liquids ​
Salsk061 [2.6K]

Answer:

Filtration works best when the solute isn't dissolve in the solvent. For instance, sand and water can be seperated through filtration because both compounds do not dissolve with each other. However, sugar and water would not be seperated through filtration as they dissolve with each other.

-google :)

3 0
4 years ago
Please help with the question attached<br>I need it in an hour​
lawyer [7]

Answer:

iiiiiiddddiiilllooeiuehe

4 0
2 years ago
Other questions:
  • The elements on the periodic table that are light blue are:
    14·1 answer
  • Why does food wrapped in aluminum foil keep warm for a long time? A) Aluminum foil is an insulator and prevents heat loss by con
    15·2 answers
  • How are atomic emission spectra used to identify elements? A) As the atom emits photons at precise frequencies it creates a simi
    14·2 answers
  • A liquid has_____volume and a _____ shape.
    12·1 answer
  • Which of the following is not an external force that acts on rocks in the rock cycle? A) wind B) pressure C) ice D) water
    8·2 answers
  • Under the right conditions aluminum will react with chlorine to produce aluminium chloride.
    7·1 answer
  • 1. Take a look at all the elements in period 3. What do you notice? *
    13·2 answers
  • How do people start alcohol consumption​
    13·1 answer
  • Which of the following properties would helium have?
    7·1 answer
  • BALANCE THE EQUATION:<br> C4H10 + O2 = CO2 + H2O
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!