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
shtirl [24]
3 years ago
11

Is fire a source of chemical energy

Chemistry
1 answer:
Leno4ka [110]3 years ago
4 0

Answer:

Any matter considered to be a fuel contains chemical energy

Energy has to be provided to initiate the reaction.

So yes. It is

You might be interested in
18)How many moles of aluminum are needed to react completely with 3.2 mol of FeO?
frez [133]

Answer:

C

Explanation:

How many moles of aluminum are needed to react completely with 3.2 mol of FeO?

C)1.6 mol

3 0
3 years ago
The boundary where two air masses meet is called a
Juliette [100K]

Answer:

front

Explanation:

Fronts represent fairly abrupt transitions between two large air masses.

6 0
3 years ago
Read 2 more answers
What type of bond is between the oxygen atoms in the following: O2?
Tpy6a [65]

Answer:

Double bond

Explanation:

4 0
3 years ago
Consider the reaction: 2HI(g) ⇄ H2(g) + I2(g). It is found that, when equilibrium is reached at a certain temperature, HI is 35.
Sliva [168]

Answer:

Kc = 0.075

Explanation:

The dissociation (α) is the initial quantity that ionized divided by the total dissolved. So, let's calling x the ionized quantity, and M the initial one:

α = x/M

x = M*α

x = 0.354M

For the stoichiometry of the reaction (2:1:1), the concentration of H₂ and I₂ must be half of the acid. So the equilibrium table must be:

2HI(g) ⇄   H₂(g) +    I₂(g)

M               0             0               <em> Initial</em>

-0.354M  +0.177M  +0.177M       <em>Reacts</em>

0.646M     0.177M   0.177M        <em>Equilibrium</em>

The equilibrium constant Kc is the multiplication of the products' concentrations (elevated by their coefficients) divided by the multiplication of the reactants' concentrations (elevated by their coefficients):

Kc = \frac{[H2]*[I2]}{[HI]^2}

Kc = \frac{0.177M*0.177M}{(0.646M)^2}

Kc = \frac{0.03133M^2}{0.41732M^2}

Kc = 0.075

5 0
3 years ago
Identify all statements that accurately describe the structure of the pyruvate dehydrogenase ( PDH ) complex.
Nostrana [21]

Answer:

The statements that correctly describes pyruvate dehydrogenase includes:

- Several copies each of E 1 and E 3 surround E 2.

-A regulatory kinase and phosphatase are part of the mammalian PDH complex.

-E 2 contains three domains.

Explanation:

Pyruvate dehydrogenase is a hydrolase key enzyme in glucose metabolism which converts pyruvate to acetyl- ChoA. It also forms a complex that catalyzes an irreversible reaction that is the entry point of pyruvate into the TCA cycle. Pyruvate dehydrogenase complex contains E1, E2 and E3 enzymes that transform pyruvate, NAD+, coenzyme A into acetyl-CoA, CO2, and NADH. Also, A regulatory kinase and phosphatase are part of the mammalian PDH complex and E 2 contains three domains.

5 0
3 years ago
Other questions:
  • 3. Give three examples of how microorganisms might demonstrate the characteristics of life
    12·2 answers
  • Is heat of fusion an extensive or intensive property? Why?
    6·1 answer
  • A 100.0g sample of tin is heated to 100.0 oC (Celsius) and is placed in a coffee cup calorimeter containing 150. g of water at 2
    6·1 answer
  • What is atomic mass?????​
    9·1 answer
  • Yeshhhhhhhhhhhhhhhh hhhhhhh hh
    14·1 answer
  • Can someone explain the answer.
    12·1 answer
  • What is quantum physics​
    7·1 answer
  • CHo 50ml dung dịch H2SO4 2M tác dụng vừa đủ với dung dịch BaCl2
    5·1 answer
  • Calculate the volume of carbon dioxide at room temperature and pressure that can be obtained from 30.0g of glucose.​
    8·1 answer
  • What is the empirical formula of a carbon-oxygen compound, given that a 95.2 g sample of the compound contains 40.8 g of carbon
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!