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tresset_1 [31]
3 years ago
13

An "arid" climate is very hot and dry. True | False

Chemistry
2 answers:
Oduvanchick [21]3 years ago
4 0

Answer:

True

Explanation:

This is true!

soldier1979 [14.2K]3 years ago
4 0

Answer:

true

Precipitation (or the lack of) is the main factor that defines Arid climate. To have an Arid climate, an area must receive less than 10 inches of rain per year. However, many areas of arid climate receive far less than that. Some deserts around the world don't receive 10 inches of rain in 10 years!

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A state of equilibrium can exist when a piece of copper metal is placed in a solution of copper(ii) sulfate. outline the charact
ankoles [38]

Answer;

-Macroscopic properties remain constant

-Concentrations remain constant

-No change to copper solution seen;

-Rate of reverse/backwards reaction = rate of forward reaction;

Explanation;

In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.

-It is a a condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. A reversible chemical reaction is one in which the products, as soon as they are formed, react to produce the original reactants.

5 0
3 years ago
2. Calculate the pressure in Pa of a brick, which weighs 40 lbs (178N) sitting flat on the
Aloiza [94]

Answer:

P =  741.7 Pa

Explanation:

Pressure:

It is the force applied on object per unit area. The force is applied perpendicular to the surface.

Mathematical expression:

P = F/A

P = pressure

F = force

A = area

Given data:

Weight = 178 N

Area = 10 cm × 24 cm

Pressure = ?

Solution:

Area = 10 cm × 24 cm

Area = 240 cm²

Area = 240 /10000 = 0.024 m²

Formula:

P = F/A

P = 178 N / 0.024 m²

P = 741.7 Nm⁻²

Nm⁻² = Pa

P =  741.7 Pa

6 0
3 years ago
* I’ll give you brainlist* The skeletal system has many functions. Which of the following body functions does the skeletal syste
velikii [3]

Answer:

A) remove germs from the blood

Explanation:

cause the rest are the skeletal system function

3 0
3 years ago
In another experiment, if 80 xo3 molecules react with 104 brz3 molecules how many br2 molecules will be produced which reactant
BaLLatris [955]

This is an incomplete question, here is a complete question.

The balanced chemical reaction is:

6XO_3+8BrZ_3\rightarrow 6XZ_4+4Br_2+9O_2

In another experiment, if 80 XO_3 molecules react with 104 BrZ_3 molecules. How many Br_2 molecules will be produced which reactant will be used up in the reaction.

Answer : The number of molecules of Br_2  will be, 52 molecules and BrZ_3 reactant will be used up in the reaction because it is a limiting reagent and it limits the formation of product.

Explanation :

The balanced chemical reaction is:

6XO_3+8BrZ_3\rightarrow 6XZ_4+4Br_2+9O_2

First we have to determine the limiting reagent.

From the balanced reaction we conclude that,

As, 8 molecules of BrZ_3 react with 6 molecule of XO_3

So, 104 molecules of BrZ_3 react with \frac{104}{8}\times 6=78 molecule of XO_3

From this we conclude that, XO_3 is an excess reagent because the given moles are greater than the required moles and BrZ_3 is a limiting reagent and it limits the formation of product.

Now we have to calculate the molecules of Br_2

From the reaction, we conclude that

As, 8 molecules of BrZ_3 react to give 4 molecules of Br_2

So, 104 molecules of BrZ_3 react to give \frac{104}{8}\times 4=52 molecules of Br_2

Hence, the number of molecules of Br_2  will be, 52 molecules and BrZ_3 reactant will be used up in the reaction because it is a limiting reagent and it limits the formation of product.

4 0
3 years ago
What is released in the process of an atom moving from an excited level to a lower energy level?
luda_lava [24]
The correct answer is a Photon.

One photon is released for each event. Photons are elementary particles of all electromagnetic radiation, including light.
7 0
3 years ago
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