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
viva [34]
3 years ago
7

Which forms of energy can be released during a chemical reaction?

Chemistry
1 answer:
geniusboy [140]3 years ago
8 0

Answer:

Heat.

Light.

Sound.

Electricity

You might be interested in
The structural formula of 2-methyl-propane<br>-2-ol​
daser333 [38]

Answer:

ch3c(ch3)(oh)ch3

Explanation:

that should be the answer

8 0
2 years ago
What observation would you look for to tell if a reaction was endothermic?
horsena [70]

Exothermic reactions release heat into their surroundings and endothermic reactions absorb heat and are cool. I believe the correct answer is D.

5 0
2 years ago
An ordered list of chemical substances is shown.
alina1380 [7]

Answer : The correct option is, (C) 2, 4 and 5.

Explanation :

Combustion reaction : It is a type of reaction in which a hydrocarbon react with an oxygen molecule to give carbon dioxide, water as a product.

For example : Methane react with oxygen to give carbon dioxide and water.

CH_4+2O_2\rightarrow CO_2+2H_2O

In the given list of chemical substances, CuO,Cu_2O,Li_2O are in oxide form. They can not be both reactant and product of a single combustion reaction.

In the given list, C_2H_5NH_2 is the only hydrocarbon which shows a combustion reaction. That means C_2H_5NH_2 react with O_2 to give CO_2,H_2O and N_2 as a product.

The balanced combustion reaction of C_2H_5NH_2 is,

20C_2H_5NH_2+40O_2\rightarrow 40CO_2+7H_2O+10N_2

Therefore, the correct answer is, (C) 2, 4, and 5.

8 0
3 years ago
Calculate the molarity of a 17.5% (by mass) aqueous solution of nitric acid. Select one: a. 2.74 m b. 4.33 m c. 0.274 m d. 3.04
den301095 [7]

Answer:

Option e.

Explanation:

Molarity is the concentration that indicates moles of solute in 1 L of solution.

We have another concentration, percent by mass.

Percent by mass indicates mass of solute in 100 g of solution.

Our solute is HNO₃, our solvent is water.

17.5 g of nitric acid is the mass of solute. We can convert them to moles:

17.5 g . 1mol / 63g = 0.278 moles

We do not have volume of solution. We assume the mass is 100 g because the percent by mass but we need density to state the volume.

Density = Mass / Volume

Mass / Density = Volume

Once we have the volume, we need to be sure the units is in L, to determine molarity

M = mol /L

4 0
3 years ago
Perform the following
vivado [14]
The correct number of significant figures and digits is 3
5 0
3 years ago
Other questions:
  • Is the sun 240,000 miles from earth?
    7·1 answer
  • If we view a 1st quarter moon tonight , how many weeks will pass before we view the next new moon?
    12·2 answers
  • The final volume of the solution is 284 mL. What is the concentration of CuSO4 in the final solution, in mol/L?
    15·1 answer
  • Why do electrons keep moving around the nucleus and not away from the atom
    5·1 answer
  • What is ""green chemistry""? Describe how the distillation procedure used in this lab is a more ""green"" approach than liquid-l
    7·1 answer
  • What is classification? write its two importance. In chemistry
    8·1 answer
  • The half-life of a radioactive kind of strontium is 3 hours. If you start with 64 grams of it, how
    6·1 answer
  • Help please is answer A or B?
    13·1 answer
  • Which component of blood allows oxygen from the air to move from the lungs to cells of the body?
    10·1 answer
  • If an engineer's greatest concern is specific impulse, which type of fuel should she use?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!