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Bess [88]
3 years ago
9

Which statement best describes the weather shown by the purple combination of semicircles and triangles on a line on a weather m

ap?
A warm front brings drizzly weather.

An occluded front can cause light to heavy precipitation that may last several days.

A cold front can cause heavy rain, thunder, and lightning.

A stationary front may produce rainy or snowy weather for several days.
Chemistry
2 answers:
BigorU [14]3 years ago
7 0

Answer:

D

Explanation:

Meteorologists use this symbol to show that the front is a stationary front.

Lunna [17]3 years ago
4 0
This is the answer I’m probably too late

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. In which reaction is nitric acid acting as an oxidising agent?
Talja [164]

Answer:

B. Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2

Explanation:

Hello,

In this case, we should understand oxidizing agents as those substances able to increase the oxidation state of another substance, therefore, in B. reaction we notice that copper oxidation state at the beginning is zero (no bonds are formed) and once it reacts with nitric acid, its oxidation states raises to +2 in copper (II) nitrate, thus, in B. Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2 nitritc acid is acting as the oxidizing agent.

Moreover, in the other reactions, copper (A.), sodium (C. and D.) remain with the same initial oxidation state, +2 and +1 respectively.

Regards.

8 0
2 years ago
Read 2 more answers
Determine how many ml of water you need to remove, by evaporation, if you have a 500 ml of 10.20 M HNO3 dilute solution and you
Ludmilka [50]

The total volume of water that would be removed will be 75 mL

<h3>Dilution equation</h3>

Using the dilution equation:

M1V1 = M2V2

In this case, M1 = 500 mL, V1 = 10.20 M, M2 = 12 M

Substitute:

V2 = 500 x 10.20/12

         = 425 mL

The final volume in order to arrive at 12 M HNO3 would be 425 mL from the initial 500 mL. Thus, the total amount of water that will be removed by evaporation can be calculated as:

500 - 425 = 75 mL

More on dilution can be found here: brainly.com/question/7208939

7 0
2 years ago
Which of the following are cations? Check all that apply.
Lostsunrise [7]

Answer:

a

barium

b

calcium

e

aluminum

f

magnesium

g

copper

Forms cation

Explanation:

4 0
3 years ago
What is the molarity of a stock solution made from 40 grams of LiOH in 16050mL of water
tekilochka [14]

Answer: heck the chemistry app itll help you i dont know this answer but the app will tell u!

6 0
3 years ago
Lighting a match changes ch and energy into heat.​
otez555 [7]

Answer:

The answer remains the same. The total amount of energy stays the same because the 1st Law of Thermodynamics states that energy can neither be created nor destroyed, it can only change forms. So the chemical energy is just being converted into heat and light.

Explanation:

hope this helps...

7 0
2 years ago
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