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pashok25 [27]
3 years ago
14

Which electromagnetic wave type has frequencies higher than the violet of visible light?

Chemistry
1 answer:
belka [17]3 years ago
7 0

Answer:

Ultraviolet means “above violet.” The electromagnetic frequencies of ultraviolet radiation (UV) extend upward from violet, the highest-frequency visible light.

hope this helps

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What is the pH of a solution of 0.400 M KH2PO4, potassium dihydrogen phosphate?
Natasha_Volkova [10]
Using the base dissociation constant for H2PO4, see attached document.

7 0
3 years ago
A sealed can with an internal pressure of 721 mmHg at
Alexxandr [17]

Answer:

2486 mmHg

Explanation:

Gay-Lussac's Law states the pressure varies directly with temperature when volume remains constant:

P₁/T₁ = P₂/T₂

Where P₁ and T₁ are initial pressure and temperature and P₂ and T₂ are final pressure and temperatue.

The problem says initial pressure is 721 mmHg, initial temperature is 25°C and final temperature is 755°C. The question is final pressure.

°C must be converted to absolute temperature (K), thus:

25°C + 273,15 = 298,15 K

755°C + 273,15 = 1028,15 K

Thus, pressure P₂ is:

(T₂·P₁) / T₁ = P₂

1028,15K · 721mmHg / 298,15 K =  2486 mmHg

I hope it helps!

7 0
4 years ago
Sodium bicarbonate is the chemical name for baking soda.Its chemical formula is NaHCO3.What does the subscript 3 mean?
prisoha [69]

Answer:

3 moles of Oxygen

Explanation:

The chemical formula of a compound is a representation which shows all the elements therein and the mole relationship between them expressed as subscripts.

   NaHCO₃  implies:

      1 mole of baking soda contains:

     1 mole of Na

     1 mole of Hydrogen

     1 mole of carbon

  And 3 moles of Oxygen

5 0
3 years ago
Boreal forests are characterized by _______ trees. A. Creosote b. Eucalyptus c. Coniferous d. Deciduous Please select the best a
Aleonysh [2.5K]

Answer:

c

Explanation:

coniferous trees, Tianga also called Boreal forest biome (major life zone).

hope it's perfect.

3 0
3 years ago
Read 2 more answers
Plssssss answer for brainliest
Lilit [14]

Answer:

No

Explanation:

Bbecause number of w is not equal on both sides

4 0
3 years ago
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