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
ch4aika [34]
3 years ago
12

Help me with this please I need the answers ASAP

Chemistry
1 answer:
Tema [17]3 years ago
7 0

Answer:

1. Exothermic reaction

2. Is being released

3. The energy comes from the change in energy between reactants and products

Explanation:

The reaction is producing energy. A reaction that produce energy is called a <em>Exothermic reaction.</em>

<em />

As the energy is produced, the energy is being <em>released.</em>

<em />

As you can see in the image, the energy of the reactants is higher than the energy of the products. This change of energy in the chemicals produce the production of energy as heat.

You might be interested in
state two methods that can be used to prepare chlorine from rock salt.write an equation in each case​
Levart [38]

Answer:

electrolysis of brine

Explanation:

Rock salt deposits are usually mined; occasionally water is pumped down, and brine which contain 25 percent of sodium chloride is found

so d brine is electrolyzed to produce chlorine

7 0
2 years ago
Oxygen 22 has a half life of 2.25 seconds. What percent of the sample is left after 2.25 seconds?
Nonamiya [84]

Answer:

50 because it’s a ratio problem

Explanation:

6 0
3 years ago
Read 2 more answers
What is the temperature of 0.750 mol of a gas stored in a 6,050 mL cylinder al 221 atm?
Rasek [7]

Answer:

T = 246 K

Explanation:

Given that,

Number of moles, n = 0.750 mol

The volume of the cylinder, V = 6850 mL = 6.85 L

Pressure of the gas, P = 2.21 atm

We need to find the temperature of the gas stored in the cylinder. We know that,

PV= nRT

Where

R is gas constant

T is temperature

So,

T=\dfrac{PV}{nR}\\\\T=\dfrac{2.21\times 6.85}{0.75\times 0.0821}\\T=245.85\ K

or

T = 246 K

So, the temperature of the gas is equal to 246 K.

4 0
3 years ago
What sequence should be followed when conducting a laboratory investigation? Make observations, gather experimental data, form a
AURORKA [14]

Answer:

Define a problem, form a hypothesis, gather experimental data, form a conclusion

3 0
3 years ago
Read 2 more answers
Which is an example of the strong force in action?
yarga [219]

I would say that it would probably be: The Sun pulls on Earth as Earth moves around the sun.

Sorry if I'm wrong <3

3 0
3 years ago
Read 2 more answers
Other questions:
  • Solve by a 1 variable equation -3(x-3)=x+9-4x
    10·1 answer
  • 1. For each polypeptide sequence listed, choose from the options given below to indicate which
    9·2 answers
  • Why does graphite and diamond sublime?
    12·1 answer
  • Which of the following equations is balanced in a basic solution? A. ClO-(aq) + 2H-(aq) + 2e- Cl-(aq) + H2O(l) B. ClO-(aq) + H2O
    8·2 answers
  • A student is designing a device that can be used for communication. Which TWO waves on the electromagnetic spectrum should the s
    6·2 answers
  • What are the signs given to the electrodes in both the voltaic and electrolytic cells? What reaction (oxidation or reduction) is
    12·1 answer
  • Which is a difference between animal populations in primary succession and secondary succession?
    12·2 answers
  • Ionic compound comprised of ammonium ions and sulfate ions
    7·1 answer
  • A reaction in which an acid reacts with an alkali to produce a salt and water only is known as
    7·2 answers
  • What are the common properties of the following element groups:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!