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
lesya [120]
3 years ago
11

Which example is a body fossil?

Chemistry
1 answer:
marin [14]3 years ago
3 0
Answer:
B
Explanation:
An body fossil is something that is apart of the animals b o d y that was left behind to be fossilized.
You might be interested in
Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that
victus00 [196]

Answer:

D

Explanation:

the production of an odor would indicate that the heat ignited a chemical reaction

6 0
3 years ago
Read 2 more answers
What is the mole ratio of NH3 to N2?
Ksenya-84 [330]
To answer this question a balanced chemical equation is necessary. The correct equation is: N2 + 3H2 = 2NH3
From this equation, one mole of nitrogen react with 3 moles of hydrogen to give 2 moles of ammonia.
Therefore, the mole ratio of NH3 to N2 is 2:1
8 0
2 years ago
The​ half-life of a certain tranquilizer in the bloodstream is 5050 hours. how long will it take for the drug to decay to 8686​%
Novosadov [1.4K]
Using the exponential decay model; we calculate "k"
We know that "A" is half of A0
A = A0 e^(k× 5050)
A/A0 = e^(5050k)
0.5 = e^(5055k)
In (0.5) = 5055k 
-0.69315 = 5055k
 k = -0.0001371
To calculate how long it will take to decay to 86% of the original mass
0.86 = e^(-0.0001371t)
In (0.86) = -0.0001371t
-0.150823 = -0.0001371 t
 t = 1100 hours

4 0
2 years ago
How does weathering change rocks and minerals
PilotLPTM [1.2K]
It changes rocks and minerals by water, ice, acids, salt, and changes in the temperature. Once the rock has been broken down a process named erosion happens, it transports bits of rocks and minerals away
3 0
3 years ago
C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O + energy In the reaction listed above, 1 molecule of glucose reacts with 6 molecules of oxyg
kirill115 [55]

Answer:

  • Third choice:<em> energy present in the glucose and oxygen that is not needed for the formation of carbon dioxide and water is released to form energy/ATP.</em>

Explanation:

<u>1) Chemical equation (given):</u>

  • C₆H₁₂O₆ + 6 O₂ --> 6 CO₂ + 6 H₂O + energy

<u>2) Chemical potential energy:</u>

Each compound stores chemical potential energy.  This energy is stored in the chemical bonds.

Due to every substance has its own unique chemical potential energy, when a chemical reaction takes plase, yielding to the change of some substances, some energy is absorbed (when bonds are formed) and some energy is released (when bonds are broken).

<u>3) Conservation of energy:</u>

Then, if the sum of the bond energies of the final products is less than the sum of the bond energies of the reactants, the<em> law of conservation of energy</em> rules that the difference between the total energies of the products and reactants must be released to the surroundings.

That is what is happening in the given reaction:

  • C₆H₁₂O₆ + 6 O₂ --> 6 CO₂ + 6 H₂O + energy

The term energy in the product side means that energy is conserved because it is being released due to the the glucose and oxygen (reactant side) have more energy stored in their bonds than the energy needed for the formation of carbon dioxide and water, so that excess of energy is released to form energy/ATP.

<u>Summarizing:</u>

  • The energy on the product side added to the energy of carbon dioxide and water equals the energy of the glucose and oxygen and the final balance is:

  • ∑ Energy of the reactants = ∑energy of the products + released energy, supporting the law of conservation of energy.
5 0
3 years ago
Other questions:
  • A(n) __________ exists to promote the sales of a particular manufacturer's products.
    7·2 answers
  • What is the pressure in atm exerted by 2.48 moles of a gas in a 250.0 mL container at 58 degrees celsius
    9·1 answer
  • What is the ph of a 0.10 m solution of ethylamine at 25 oc? the pkb of ethylamine at 25 ºc is 3.25. ethylamine is a weak base?
    8·1 answer
  • How many calories is 130. joules?
    11·1 answer
  • Which lists the elements in order from most conductive to least conductive?
    14·2 answers
  • When discussing the Arrhenius equation and chemical / enzyme kinetics, which of the following statements is incorrect ? A. A cat
    12·1 answer
  • What is the total number of neutrons in the nucleus of a neutral atom that has 19 electrons and a mass of 39?
    8·1 answer
  • Covalent bonds form through:
    5·1 answer
  • What's the charge on Ni in the compound NiCi3? *
    12·1 answer
  • The video states that in order to use the triangulation method needs a certain number of seismograph stations. How many stations
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!