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
PtichkaEL [24]
2 years ago
7

If Jonathan went skateboarding from 4:00 PM to 4:30 PM and traveled 450 meters, what was his average speed?

Chemistry
1 answer:
mrs_skeptik [129]2 years ago
8 0
20 m Increase by five
You might be interested in
If 45.6 grams of water decompose at 301 Kelvin and 1.24 atmospheres, how many liters of oxygen gas can be produced? Show all of
Artyom0805 [142]

This reaction is called the electrolysis of water. The balanced reaction is:

 2H2O = 2H2 + O2

<span>
We are given the amount of water for the electrolysis reaction. This will be the starting point of our calculation.

45.6 grams H2O (1 mol H2O / 18.02 g H2O) (1 mol O2 / 2 mol H2O) = 1.27 mol O2

V = nRT/P = </span><span>1.27 mol O2 (0.08206 atm L / mol K) (301 K) / 1.24 atm
V = 25.20 L O2</span>
6 0
3 years ago
HURRY!!<br><br><br><br><br><br><br><br><br><br><br> I NEEE HELP!!!
Ludmilka [50]

Answer:

NEEE

Explanation:

5 0
2 years ago
A glass jar is sealed, trapping air inside. The jar warms up after it is left ourside in the sun. What will happpen to the press
amid [387]

Answer:

the particles start to spread out and cause it to get warmer

Explanation:

7 0
3 years ago
Balancing Al+ Agcl, i have problems with this so help!!!
EleoNora [17]

Answer:

Al  + 3AgCl  →  AlCl₃  + 3Ag

Explanation:

The given equation is:  

      Al  + AgCl  →  

We are to find the product and hence balance the equation. This problem is a simple single replacement reaction.

By virtue of this, Aluminum will displace Ag from the solution:

                       Al  + AgCl  →  AlCl₃  + Ag

    We then balance the equation:

                        Al  + 3AgCl  →  AlCl₃  + 3Ag

                                             

5 0
3 years ago
Which one of the following statements about mixtures is correct [2] [3] The different substances in a mixture are always in a de
aivan3 [116]

Answer: Option (4) is the correct answer.

Explanation:

A mixture is defined as a substance that contains two or more different substance that are physically mixed with each other.

If solute particles are evenly distributed in a solvent then it is known as a homogeneous mixture.

For example, salt dissolved in water is a homogeneous mixture.

If solute particles are unevenly distributed into the solvent then it is known as a heterogeneous mixture.

For example, sand in water is a heterogeneous mixture.

Thus, we can conclude that the statement a mixture must contain at least two different substances, is correct about mixtures.

4 0
3 years ago
Other questions:
  • When an electron is added, the ion is called?______
    6·2 answers
  • In a laboratory experiment, john uses a message to seperate soil particles from water . Which technique separation which techniq
    11·1 answer
  • What is the identity of an alpha particle?
    5·1 answer
  • A moving object collides with a stationary object. Which of the following statements is true according to Newton’s third law of
    14·1 answer
  • What is the maximum mass of ethyl alcohol you could boil with 2000 JJ of heat, starting from 17 ∘C∘C?
    8·2 answers
  • The noble gases are grouped together in the periodic table. where are the noble gases in the table?
    11·2 answers
  • PLEASE HELPPPPP!!! Type 1-2 paragraphs describing the changes and potential kinetic and thermal energy of the car to each of the
    10·1 answer
  • Which observation illustrates the law of conservation of mass?
    12·1 answer
  • An unknown substance is made only of identical atoms that cannot be broken down. This substance is a ________.
    9·2 answers
  • 10. The electronic configuration of two elements X and Y are given below:
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!