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OLga [1]
3 years ago
7

BRAINLIEST + 20 POINTS!!!

Chemistry
1 answer:
UNO [17]3 years ago
5 0

Answer:

The energy of a photon depends on the frequency of the emission.

Explanation:

E = hν  

where E is the energy of a photon, ν   is the frequency of photon and h is Planck’s constant.  

Energy of a photon is quantized and is directly proportional to the frequency of the emission.  

Quantized energy of a photon explained the photoelectric effect. It was proven that light not has wave nature but particle nature as well. This later gave rise to wave particle duality of light waves.

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What are some possible ways these rocks were formed? Be sure to discuss all 3 rocks.<br> pls help me
horrorfan [7]

The brownish rock is a sedimentry rock was formed when things like sand, mud, or pebbles get laid down in layers. Eventually the layers are lithified.

The grey rock is a metamorphic rock and was when other rocks are changed because of heat or pressure. Earth movements can cause rocks to be deeply buried or squeezed. As a result, the rocks are heated and put under great pressure. They do not melt, but the minerals they contain are changed chemically, forming metamorphic rocks.

The red dots rock is an igneous rock. Igneous rock forms when hot, molten rock crystallizes and solidifies.

8 0
3 years ago
Read 2 more answers
What is the precipitate form of NaOH+FeSO4?
Zanzabum

Answer:

(Fe(OH)2 + Na2SO4

Explanation:

Iron (II) hydroxide precipitate. Iron (II) hydroxide precipitate (Fe(OH)2) formed by adding few drops of a 1M solution of sodium hydroxide (NaOH) to 0.2 M solution ferrous sulfate (FeSO4). The reaction is FeSO4 + NaOH -> Fe(OH)2 + Na2SO4. This is an example of a double replacement reaction. Pure iron (II) hydroxide is white, however even trace amounts of oxygen make it greenish.

4 0
3 years ago
How many grams of H2 are needed to produce 10.42 g of NH3
tamaranim1 [39]
N2 + 3 H2 >> 2 NH3 moles NH3 = 11.50 g /17.0307 g/mol=0.6753 the ratio between H2 and NH3 is 3 : 2 moles H2 needed = 0.6753 x 3/2 =1.013 mass H2 = 1.013 mol x 2.106 g/mol=2.042 g
8 0
3 years ago
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Sean is moving heavy furniture by sliding it across the floor. he puts a blanket under Meath the furniture why did this help him
Neko [114]
The answer is C.....
5 0
3 years ago
Why have some chemicals been banned from usage in agriculture/food production
bulgar [2K]

Answer:

okay so to tell the story short:

Explanation:

over the years farmers in agriculture businesses have decide to use safer chemicals. because since people have been getting food poisoning and been getting sick. but now farmer businesses now use some chemicals that have very low toxicity. When pesticides were first introduced, farmers were using chemicals that were very toxic. but then that's when they realised that the they had to be removed from the application and today they have been replaced with better and healthier ones just like (glyphosate.)

4 0
3 years ago
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