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
jasenka [17]
3 years ago
7

Please help me it’s my birthday

Chemistry
1 answer:
GalinKa [24]3 years ago
5 0

Answer:

ur answer would be D.)

Explanation:

Hope this helps

also happy birthday

You might be interested in
Use the formula: PV=nRT<br><br> If P=12, V=22.4, R=.0821 and T=100, then what would n=?
Lina20 [59]
PV=nRT \\ (12)(22.4)=n(.0821)(100) \\ 268.8=8.21n \\ 268.8/8.21=8.21n/8.21 \\ n=32.74
n ≈ 32.74
Hope this helps!
7 0
3 years ago
Which stage of the scientific process enables a scientist to check the work of other
blsea [12.9K]

Answer:

The answer to this would be communicating.

Explanation:

A scientist would be communicating to his or her fellow colleagues and sharing to them his or her idea.

Hope you find this answer helpful! :)

3 0
3 years ago
When water reaches its boiling point and turns into water vapor what happens to its molecular structure
Alex787 [66]
When water reaches its boiling point and turns into water vapor, the molecular structure of water remains the same. It is only the state of the substance that is changed in this process. I hope this helps you 
8 0
3 years ago
HELPP
Natasha_Volkova [10]
I’m pretty sure it’s D.increases the activation energy for a reaction.
4 0
3 years ago
I wanted known how many of the reaction below is energy released
Tema [17]

Answer:

2

Explanation:

In two reactions energy is released.

1) C₆H₁₂O₆ + 6O₂    →    6H₂O + 6CO₂ + heat

It is cellular respiration reaction.It involves the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.

Glucose + oxygen → carbon dioxide + water + 38ATP

2) 2H₂ + O₂   →    2H₂O  ΔH = -486 kj/mol

The given reaction is formation of water. In this reaction oxygen and hydrogen react to form water and 486 kj/mol is also released.

The reaction in which heat is released is called exothermic reaction.

Exothermic reaction:

The type of reactions in which energy is released are called exothermic reactions.

In this type of reaction energy needed to break the bonds are less than the energy released during the bond formation.

For example:

Chemical equation:

C + O₂   →  CO₂

ΔH = -393 Kj/mol

it can be written as,

C + O₂   →  CO₂ + 393 Kj/mol

Endothermic reactions:

The type of reactions in which energy is absorbed are called endothermic reactions.

In this type of reaction energy needed to break the bond are higher than the energy released during bond formation.

For example:

C + H₂O   →  CO  + H₂

ΔH = +131 kj/mol

it can be written as,

C +  H₂O  + 131 kj/mol  →  CO  + H₂

5 0
3 years ago
Other questions:
  • Jaina just got home from a difficult workout. She is complaining of muscle soreness and cramps. Which waste product of fermentat
    6·1 answer
  • Which of the following molecules is a polymer of a smaller carbohydrate unit?a. lactaseb. glucosec. glycogend. sucrosee. triacyl
    5·1 answer
  • How many moles CH3OH are in 14.8 g CH3OH?<br>​
    13·1 answer
  • Which statement about enzymes is true? A. They are large molecules that decrease the rate of reactions in the body. B. They are
    5·2 answers
  • A known number of moles of gas is placed in a
    11·2 answers
  • Calculating pH
    13·1 answer
  • 2. Which number is not a coefficient in the equation,<br> 2C6H14+ 19O2,-- 12CO2,+ 14H2O?
    8·1 answer
  • Why is ice melting a physical change?
    14·2 answers
  • What is the iupac name of CH3-CH2CH(CH3)CH2-COOH​
    9·1 answer
  • Who arranged the elements into the first periodic table?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!