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2 years ago

The law of mass action suggests that _____.

Physics

2 answers:

Nostrana [21]2 years ago

7 0

the higher concentration of molecules, the faster a reaction can occur

pochemuha2 years ago

6 0

Answer:

<h2>The higher concentration of molecules, the faster a reaction can occur</h2>

Explanation:

The law of mass action states that the rate of a chemical reaction is directly proportional to the product of the masses of the reactor. In other words, the more molecules concentration, the faster the reaction can develop.

Therefore, the choice that completes the given statement is the first one: "the higher concentration of molecules, the faster a reaction can occur".

So, the completed statement is<em> The law of mass action suggests thatthe higher concentration of molecules, the faster a reaction can occur.</em>

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When exercising, which hormone level decreases in females often causing a better mood?

Arisa [49]

Answer:

The correct option is;

Adrenalin

Explanation:

The presence of Adrenalin can cause headaches, memory loss, confusion, make a person unable to concentrate, and therefore, generally affects the mode in female, as such it is important for a decrease the level of Adrenalin by exercising, which causes the Adrenalin and cortisol to reduce in a similar way to consuming gasoline by burning gasoline, cardiovascular exercises burns Adrenaline.

Doing exercises causes adrenaline and cortisol, which are the body's stress hormones to be reduced.

6 0

3 years ago

A car drives 90 meters north, then turns around and drives 120 meters south. What was its displacement and distance?

Rufina [12.5K]

Answer:

displacement= 30 m towards south, distance= 210m

Explanation:

Distance (scalar quantity) how much ground an object has covered.

Displacement (vector quantity) refers to how far out of place an object is it is the object's overall change in position.

Basically meaning for displacement the directions will be very key

D for Displacement

D= D1+D2

D= 120 (S) + 90 m (N)

Must be in same direction

D= 120 (S) + (-90 m) (S)

D= 30 m (S)

and for distance you are simply just adding how much distance they have covered

so d= d1+d2

d= 90m + 120m

d= 210m

3 0

2 years ago

You hang a light in front of your house using an

Kaylis [27]

The magnitudes of the forces that the ropes must exert on the knot connecting are :

F₁ = 118 N
F₂ = 89.21 N
F₃ = 57.28 N

<u>Given data :</u>

Mass ( M ) = 12 kg

∅₂ = 63°

∅₃ = 45°

<h3>Determine the magnitudes of the forces exerted by the ropes on the connecting knot</h3><h3 />

a) Force exerted by the first rope = weight of rope

∴ F₁ = mg

= 12 * 9.81 ≈ 118 kg

<u>b) Force exerted by the second rope </u>

applying equilibrium condition of force in the vertical direction

F₂ sin∅₂ + F₃ sin∅₃ - mg = 0 ---- ( 1 )

where: F₃ = ( F₂ cos∅₂ / cos∅₃ ) --- ( 2 ) applying equilibrium condition of force in the horizontal direction

Back to equation ( 1 )

F₂ = [ ( mg / cos∅₂ ) / tan∅₂ + tan∅₃ ]

= [ ( 118 / cos 63° ) / ( tan 63° + tan 45° ) ]

= 89.21 N

<u />

<u>C ) </u><u>Force </u><u>exerted by the</u><u> third rope </u>

Applying equation ( 2 )

F₃ = ( F₂ cos∅₂ / cos∅₃ )

= ( 89.21 * cos 63 / cos 45 )

= 57.28 N

Hence we can conclude that The magnitudes of the forces that the ropes must exert on the knot connecting are :

F₁ = 118 N, F₂ = 89.21 N, F₃ = 57.28 N

Learn more about static equilibrium : brainly.com/question/2952156

6 0

2 years ago

The following situation will be used for the next three problems: A rock is projected upward from the surface of the moon, at ti

chubhunter [2.5K]

Explanation:

Given that,

Initial speed of the rock, u = 30 m/s

The acceleration due to gravity at the surface of the moon is 1.62 m/s².

We need to find the time when the rock is ascending at a height of 180 m.

The rock is projected from the surface of the moon. The equation of motion in this case is given by :

$h=ut-\dfrac{1}{2}gt^2\\\\180=30t-\dfrac{1}{2}\times 1.62t^2$

It is a quadratic equation, after solving whose solution is given by:

t = 7.53 s

t = 8 seconds

(e)If it is decending, v = -20 m/s

Now t' is the time of descending. So,

$v=-u+gt\\\\t=\dfrac{v+u}{g}\\\\t=\dfrac{20+30}{1.62}\\\\t=30.86\ s$

Let h' is the height of the rock at this time. So,

$h'=ut-\dfrac{1}{2}gt^2\\\\h'=30\times 30.86-\dfrac{1}{2}\times 1.62\times 30.86^2\\\\h'=154.40\ m$

h' = 155 m

6 0

2 years ago

1 pts<br> How can two different nonmetals form a compound?

Molodets [167]

Explanation:

Covalent or molecular compounds form when elements share electrons in a covalent bond to form molecules. Molecular compounds are electrically neutral. Ionic compounds are (usually) formed when a metal reacts with a nonmetal (or a polyatomic ion). Covalent compounds are formed when two nonmetals react with each other.

3 0

3 years ago