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3 years ago

You can slow down the rate of a reaction by ____.

Chemistry

1 answer:

Volgvan3 years ago

7 0

Answer:

d. adding an inhibitor

c. fish that emit light

c. released

Explanation:

An inhibitor is a negative catalyst. It is usually a substance that slows down the rate of chemical reaction.

Chemical inhibitors acts in way that makes reactions drags over time.

Increasing temperature, increasing concentration and decreasing particle size all will increase the rate of chemical reaction. They make reactions proceed more faster.

When a fish emits light, it is not an exothermic reaction.

An exothermic reaction is one in which heat is released to the environment. In such reactions, heat is liberated to the surroundings. At the end of the reaction, the surrounding will have a higher temperature compared to the reaction.

We assign exothermic reactions a negative value because the sum of heat contents of products is less than that of reactants.

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A car can accelerate from a standstill to 100 km/h [E] in 9.60s. calculate the average acceleration

Lelu [443]

Answer:

Acceleration is :

a = 2.89 m/s2

Explanation:

Acceleration : It is the change in the velocity of the object per unit time.

The object starts from the rest , so the initial velocity of the object is zero.

Initial velocity , u = 0

Final velocity = 100 km/h

Change the velocity to m/s because[ time unit is in second(9.60 s)]

1 km = 1000 m

1 hour = 60 x 60 sec = 3600 sec

$1km/h=\frac{1000}{3600}m/s$

$1km/hr=\frac{5}{18}$

$100km/hr=\frac{5}{18}\times 100$

$v=\frac{5}{18}\times 100$

v = 27.78 m/s

u = 0 m/s

time = 9.60 s

The acceleration"a" is calculated using :

$a=\frac{v-u}{t}$

$a=\frac{27.78-0}{9.6}$

$a=\frac{27.78}{9.6}$

$a=2.89m/s^{2}$

5 0

3 years ago

1 Condensation

larisa86 [58]

Answer:

Explanation:

A ) Solar Radiation

B ) Evaporation

C ) Transpiration

D ) Condensation

E ) Precipitation

F ) Run Off

G ) Infiltration

H ) Groundwater .

3 0

3 years ago

Identify the relationship between <2 and <4*

dexar [7]

I don’t understand your questions can you elaborate

6 0

3 years ago

Help me please I really do need help pls text me if u wanna help me more

8090 [49]

Respiration . I’m pretty sure

8 0

3 years ago

State the definition of the partial molar Gibbs energy.

balu736 [363]

Explanation :

As we know that the Gibbs free energy is not only function of temperature and pressure but also amount of each substance in the system.

$G=G(T,P,n_1,n_2)$

where,

$n_1\text{ and }n_2$ is the amount of component 1 and 2 in the system.

Partial molar Gibbs free energy : The partial derivative of Gibbs free energy with respect to amount of component (i) of a mixture when other variable $(T,P,n_j)$ are kept constant are known as partial molar Gibbs free energy of $i^{th}$ component.

For a substance in a mixture, the chemical potential $(\mu)$ is defined as the partial molar Gibbs free energy.

The expression will be:

$\bar{G_i}=\mu_i=\frac{\partial G}{\partial n_i}_{(T,P,n_j)}$

where,

T = temperature

P = pressure

$n_i\text{ and }n_j$ is the amount of component 'i' and 'j' in the system.

4 0

3 years ago