CHEMISTRY HIGH SCHOOL

The capacity of a muscle to continue contracting over a period of time without fatigue is called: A. muscular strength.
B. muscular endurance.
C. cardiovascular endurance.
D. power.

Answers

Answer 1
Answer: B. muscular endurance

The capacity of a muscle to continue contracting over a period of time without fatigue is called muscular endurance.
NOT:
A. muscular strength. 
C. cardiovascular endurance. 
D. power.

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When wood is burned, energy is released in the forms of heat and light. Describe the reaction, and explain why this change does not violate the law of conservation of energy. Use the terms combustion, exothermic, and chemical energy.

Answers

Burning wood would be a sort of combustion (spontaneous), which is a biochemical process that occurs involving chemical energies.

  • It's indeed exothermic, which means it generates heat because it happens. Whenever the hardwood is burnt, charcoal decomposes and then becomes responsible for the formation and creates a new particle.
  • Because the carbons aren't generated but just redistributed or shuffled, this doesn't contradict the principle or the concept of conserving energy.

Thus the above approach is appropriate.

Learn more about combustion here:

brainly.com/question/2121609
Burning wood is a form of spontaneous combustion, a type of chemical reaction occurring with chemical energy. It is exothermic, meaning it releases heat when it occurs.When wood is burned, carbon breaks down (which creates the crackling sound you hear) and creates a new material. Since the carbons are not being created and only rearranged, this does not violate the law of conservation of energy.

A 6.00 L vessel is filled with 1.00 mole each of NH₃, N₂, and H₂. Given the following data... with a calculation of the reaction will go in order to reach equilibrium. You must support your choice

Answers

4365 that’s what the answer is

Final answer:

The reaction will proceed in the forward direction to reach equilibrium.

Explanation:

To determine which reaction will go in order to reach equilibrium, we need to compare the initial number of moles of reactants to the stoichiometric coefficients of the balanced equation. The balanced equation for the reaction between NH₃, N₂, and H₂ is:

NH₃ + N₂ ↔ 2NH₃

Since the initial number of moles of NH₃, N₂, and H₂ are the same (1.00 mole each), the reaction will proceed in the forward direction to reach equilibrium.

Learn more about Equilibrium here:

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A substance has a melting point of 0 degrees C and a boiling point of 100 degreesc. The substance is most likely
a. Water
b. Hydrogen
c. Gold
d. Table salt

Answers

water. Just something you need to memorize

Water for sure.

100 degrees Celsius is 212 degrees Fahrenheit

0 degrees Celsius is 32 degrees Fahrenheit.

Be sure to remember that for future events! :)

Which is true about fossil fuels? A.
Coal came from ancient plants, while oil and natural gas came from marine organisms.

B.
Oil and coal came from dinosaurs, while natural came from marine organisms.

C.
Coal came from marine organisms, while oil and natural gas came from fish.

D.
Natural gas and oil came from ancient plants, while coal came from dinosaurs.

Answers

A. i just did this test
The correct answer would be D. Natural gas and oil came from ancient plants, while coal came from dinosaurs.

Why does a reaction slow down with time?

Answers

As a reaction proceeds the concentration of the reactants will get lower. Since reactions occur due to collisions that are in the correct orientation and lower concentrations leads to a lower amount of collisions, lower concentrations result in lower reaction rates. I hope this helps. Let me know if anything is unclear.

Formula A: CH3Formula B: C2H6
Given the two formulas representing the same compound:
Which statement describes these formulas?
(1) Formulas A and B are both empirical.
(2) Formulas A nd B are both molecular.
(3) Formula A is empirical and Formula B is molecular.
(4) Formula A is molecular and Formula B is empirical.

Answers

Correct option is (3).

Empirical formula:-Simplest whole number ratio of various atoms present in a compound.

Molecular formula:-The formula that gives the total number of atoms of each element in each molecule of a substance.

So, C_2H_6(formula B) is the molecular formula, andCH_3 (Formula A)is the empirical formula.

Hence, the correct option is (3).

To know more about:-

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(3) because Hydrocarbon compound has 3 forms:
CnH2n
CnH2n-2
And CnN2n+2
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