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Zigmanuir [339]
2 years ago
5

Okay I know that is a physical change but like someone can you please explain to me how is it physical change.

Chemistry
2 answers:
Lena [83]2 years ago
5 0

Answer:

That is the answer

Explanation:

Yakvenalex [24]2 years ago
4 0

Answer:

It is a physical change because it is still food and made up of the same things, just in smaller pieces and ground up.

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Visible light has an average wavelength of 550 nm. How much energy would be in this wavelength of light? 5 x 10-19​
beks73 [17]

Answer:

E = 3.6×10⁻¹⁹ J

Explanation:

Given data:

Wavelength = 550 nm  (550 ×10⁻⁹ nm)

Energy of wave = ?

Solution:

Formula:

E = h c/λ

c = 3×10⁸ m/s

h = 6.63×10⁻³⁴ Js

Now we will put the values in formula.

E = 6.63×10⁻³⁴ Js × 3×10⁸ m/s /550 ×10⁻⁹ nm

E = 19.89×10⁻²⁶ J.m /550 ×10⁻⁹ nm

E = 0.036×10⁻¹⁷ J

E = 3.6×10⁻¹⁹ J

3 0
2 years ago
your aunt tells you that she gets cold when the temperature falls below 60 degrees. does she mean Celsius or degrees Fahrenheit?
mestny [16]
Fahrenheit. 60  degrees celcius is 140 degrees fahrenheit, which is very hot.
8 0
2 years ago
Anil accidentally swallows a substance that activates the complement cascade in the absence of bound antibodies. this substance
ale4655 [162]

Answer:

This substance would cause cause an extensive cellular damage to Anil.

5 0
1 year ago
A reaction occurs in which hydrogen-1 and hydrogen-2 form helium-3. Is this a chemical reaction or a nuclear reaction, and how d
olga nikolaevna [1]
Cause -3 is -3sjsnsnsnsnsnnsnsnsnnsnsnsnsn
7 0
3 years ago
The compound, nah2po4, is present in many baking powders. what is its name? sodium phosphate sodium bephosphate sodium dihydroge
AlladinOne [14]
 The  compound NaH2PO4     name  is

sodium  dihydrogen  phosphate

 
Explanation
This name is    arrived  at  by using the   IUPAC rules  of naming   compound

1.  the metal (sodium)is  named  first  followed  by  the ligand ( hydrogen  and phosphate)

Ligand  are  molecules   that are   attached to  the metal  center.

2.   ligand  are  named using alphabetical   order(for  our  case  h  for hydrogen come before p for  phosphate hence hydrogen is named first)

3. Prefix   di is used  since hydrogen  are two

hence the name  of the compound  is  Sodium dihydrogen  phosphate


8 0
3 years ago
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