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
Scrat [10]
3 years ago
10

James decides to walk home from school today. He lives 3 miles from school and can walk home in 45 minutes. At what rate is Jame

s traveling?
Chemistry
1 answer:
Natasha2012 [34]3 years ago
7 0
One mile every 15 minutes
You might be interested in
Select the Independent, Dependent and Controlled Variables
dalvyx [7]

Answer:

The independent variable is graphed on the x-axis. The dependent variable, which changes in response to the independent variable, is graphed on the y-axis. Controlled variables are usually not graphed because they should not change.

4 0
2 years ago
Read 2 more answers
Wat are the five assumption of kinetic therory of gases​
il63 [147K]

Answer:

The five assumption of Kinetic molecular theory are given below.

Explanation:

Kinetic molecular theory of gasses stated that,

1) Gases consist of large number of smaller particles which are distance apart from each others.

2) The gas molecules collide with each other and also with wall of container and this collision is elastic.

3) Gas molecules are in continuous random motion and posses kinetic energy.

4) The forces of attraction between gas molecules are very small and considered negligible.

5) The temperature of gas is directly proportional to average kinetic energy of gas molecules.

6 0
3 years ago
Why amino acids are soluble in pH=3 or pH=10 solutions more than it dissolves in pH=7 solutions?
Ray Of Light [21]

Answer:

Solubility is Affected by pH

The pH of an aqueous solution can affect the solubility of the solute. By changing the pH of the solution, you can change the charge state of the solute.

At pH extremes, the amino acid molecules mostly carry a net charge, thus increasing their solubility in polar solvent. At very low or very high pH, the amino acid molecules have increased charge, thus form more salt bonds with water solvent molecules.

An isoelectric point is the pH at which an amino acid exists as its zwitterion. A zwitterion is the dipolar ionic form of an amino acid. ... If the pH is lower (in acidic conditions) than the isoelectric point then the amino acid acts as a base and accepts a proton at the amino group. This gives it a positive change.

An amino acid is usually more soluble in aqueous solvent at pH extremes than it is at a pH near the isolelectric point of the amino acid. (Note that this does not mean that the amino acid is insoluble at a pH near its pI.)

Which of the following statements correctly explains this phenomenon?

(Select all that apply.)

The neutral charge of an amino acid molecule at its isoelectric point will make the molecule hydrophobic.

At pH extremes, the amino acid molecules mostly carry a net charge, thus increasing their solubility in polar solvent.

At very low or very high pH, the amino acid molecules have increased charge, thus form more salt bonds with water solvent molecules.

At pH values far from the isoelectric point, individual amino acid molecules have greater kinetic energy, thus more readily stay in solution.

<h2>Please mark me as brainliest</h2>

8 0
3 years ago
Which reaction results in the GREATEST increase in entropy?
Nitella [24]
I would say D would be the answer
8 0
3 years ago
21. Which has a greater density: a large block of ice or a small block of iron?
irinina [24]

Answer:

I think ice !

Explanation:

its my answer

7 0
3 years ago
Other questions:
  • The sum of potential and kinetic energies in the particles of a substance is called _______ energy.
    13·2 answers
  • If steel (a metal) is hard and granite (a nonmetal) is hard, why don’t we make automobile engines out of granite?
    12·1 answer
  • Determine the number of protons, electrons, neutrons, valence electrons and valency in Oxygen atom (O) and Oxide ion (O2-). Comp
    5·1 answer
  • hurry please! avogadro's law relates the volume of a gas to the number of moles of gas when temperature and pressure are constan
    7·1 answer
  • Which statement correctly describes a scientific theory? A. It is accepted as true indefinitely. B. It is based on repeated inve
    12·1 answer
  • Aluminum can react with oxygen gas to produce aluminum oxide (Al2O3). What type of reaction is this?
    7·1 answer
  • The initial velocity of a car is 10 m/s to the north. The car undergoes an acceleration of 2 m/sto the north for 4 seconds. What
    11·1 answer
  • How does the behavior of the particles determine the properties of the state of matter?​
    6·2 answers
  • An unknown liquid has a mass of 30.8 g, and a volume of 31.5 mL. What is the density of this liquid?
    8·1 answer
  • H. Nitrogen gas and hydrogen gas combine to produce ammonia gas (NH3).
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!