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3 years ago

Activation energy is (blank)

Chemistry

2 answers:

timurjin [86]3 years ago

7 0

B. The energy barrier between reactants and products

hope this helps!

sladkih [1.3K]3 years ago

6 0

Entropy and Free Energy Quiz

1) B

2) C

3) A

4) C

5) D

6) C

7) B

8) C

9) B

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Ethylene produced by fermentation has a specific gravity of 0.787 at 25 degree Celsius. What is the volume of 125g of ethanol at

WITCHER [35]

Answer: The volume of given amount of ethanol at this temperature is 159.44 mL

Explanation:

Specific gravity is given by the formula:

$\text{Specific gravity}=\frac{\text{Density of a substance}}{\text{Density of water}}$

We are given:

Density of water = 0.997 g/mL

Specific gravity of ethanol = 0.787

Putting values in above equation, we get:

$0.787=\frac{\text{Density of a substance}}{0.997g/mL}\\\\\text{Density of a substance}=(0.787\times 0.997g/mL)=0.784g/mL$

Density is defined as the ratio of mass and volume of a substance.

$\text{Density}=\frac{\text{Mass}}{\text{Volume}}$ ......(1)

Given values:

Mass of ethanol = 125 g

Density of ethanol = 0.784 g/mL

Putting values in equation 1, we get:

$\text{Volume of ethanol}=\frac{125g}{0.784g/mL}=159.44mL$

Hence, the volume of given amount of ethanol at this temperature is 159.44 mL

6 0

3 years ago

How does heat move between objects that are touching?

Tom [10]

Answer:

Conduction

Explanation:

Conduction is heat transfer between two objects that are touching each other. When two objects touch and one has a higher temperature than the other; heat is transferred to the object with the lower temperature. ... In radiation, heat is transferred from one object to another by electromagnetic waves of energy. Edit : Please mark brainliest if it helped, thanks.

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2 years ago

Draw a resonance structure, complete with all formal charges and lone (unshared) electron pairs, that shows the resonance intera

icang [17]

Answer:see the picture attached

Explanation:

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3 years ago

This is how krypton appears in the periodic table.A purple box has K r at the center and 36 above. Below it says krypton and bel

GarryVolchara [31]

The number of protons in an atom of krypton is 36.

Explanation:

The number written above the symbol of Kr in the periodic table represents the atomic number of the element . Then the number written in the below represents the mass number.

So the mass number of krypton is 84 and the atomic number of krypton is 36. As it is known that number of protons and electrons will be equal in a stable element. Thus, the krypton atom will be having 36 protons.

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3 years ago

Read 2 more answers

what are the names of the "subunits" within the myofibrils that run the length of skeletal muscle fibers?

Shtirlitz [24]

Answer:

Sarcomeres

Explanation:

A muscle fiber is composed of many myofibrils, A sarcomere is the basic unit of a myofibril.

Sarcomeres are arranged in a stacked pattern throughout the muscle tissue, giving it a striped pattern. Sarcomeres are composed of thick and thin filaments. The thin and thick filaments interact initiate the movement of muscle.

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3 years ago