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
natta225 [31]
3 years ago
15

Which of the following tools is not used for measurement?

Chemistry
1 answer:
Verdich [7]3 years ago
8 0

Answer:

tape measure

Explanation:

I am helping

You might be interested in
What factors affect the dynamic state of equilibrium in a chemical reaction and how?
yanalaym [24]

Answer:

Only changes in temperature will influence the equilibrium constant K_c. The system will shift in response to certain external shocks. At the new equilibrium Q will still be equal to K_c, but the final concentrations will be different.

The question is asking for sources of the shocks that will influence the value of Q. For most reversible reactions:

  • External changes in the relative concentration of the products and reactants.

For some reversible reactions that involve gases:

  • Changes in pressure due to volume changes.

Catalysts do not influence the value of Q. See explanation.

Explanation:

\displaystyle K_c = {e}^{\Delta G/(R\cdot T)}.

Similar to the rate constant, the equilibrium constant K_c depends only on:

  • \Delta G the standard Gibbs energy change of the reaction, and
  • T the absolute temperature (in degrees Kelvins.)

The reversible reaction is in a dynamic equilibrium when the rate of the forward reaction is equal to the rate of the backward reaction. Reactants are constantly converted to products; products are constantly converted back to reactants. However, at equilibrium Q = K_c the two processes balance each other. The concentration of each species will stay the same.

Factors that alter the rate of one reaction more than the other will disrupt the equilibrium. These factors shall change the rate of successful collisions and hence the reaction rate.

  • Changes in concentration influence the number of particles per unit space.
  • Changes in temperature influence both the rate of collision and the percentage of particles with sufficient energy of reaction.

For reactions that involve gases,

  • Changing the volume of the container will change the concentration of gases and change the reaction rate.

However, there are cases where the number of gases particles on the reactant side and the product side are equal. Rates of the forward and backward reaction will change by the same extent. In such cases, there will not be a change in the final concentrations. Similarly, catalysts change the two rates by the same extent and will not change the final concentrations. Adding noble gases will also change the pressure. However, concentrations stay the same and the equilibrium position will not change.

8 0
3 years ago
In a solution, the solvent is...
Marina CMI [18]

Answer:

The solvent is the substance that dissolves solutes.

Explanation:

Solutes are the ones being dissolved. Examples could be sugar, salt, etc.

Solvents are the dissolver. Examples could be acids like HCl or water.

7 0
3 years ago
Read 2 more answers
What is the product of the reaction of (S)-2-bromobutane with sodium methoxide in acetone?
Serggg [28]

Answer:

2-methoxybutane

Explanation:

This reaction is an example of Nucleophilic substitution reaction. Also, the reaction of (S)-2-bromobutane with sodium methoxide in acetone, is bimolecular nucleophilic substitution (SN2). The reaction equation is given below.

(S)-2-bromobutane + sodium methoxide (in acetone) → 2-methoxybutane

7 0
3 years ago
Explain why oil is called a fossil fuel.
Dmitrij [34]

Oil is referred to as a fossil fuel because it is derived from fossils.

Fossil fuels are the result of dinosaur remains being put under pressure for millions of years.

3 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP
Dahasolnce [82]

Answer:0,25 g/cm3 creo

Explanation:densidad es masa entre volumen

5 0
3 years ago
Read 2 more answers
Other questions:
  • How many valance electrons are in group 16
    5·2 answers
  • What kind of energy can be mainly excited by us/visible light
    15·1 answer
  • In the following balanced reaction, what volume of a 3.0 M H2SO4 is required to completely neutralize 200.0 ml of a 2.5 M NaOH?
    11·2 answers
  • 2. From each of the following pairs of atoms, pick the atom that has
    12·1 answer
  • Think about what you know about science today. How do you think scientific knowledge will be different in 100 years?
    11·1 answer
  • Balance the equation pls
    11·1 answer
  • 12. The most common factors that cause chemical reactions to occur are all the following except
    10·1 answer
  • Why must living things rely on thousands of catalysts for chemical reactions necessary for life?
    5·2 answers
  • The invention of the _____________ was considered the critical invention for easily classifying and organizing Stars by brightne
    9·2 answers
  • 15. Which portion of a molecule of F20 has partial positive charge?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!