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Roman55 [17]
3 years ago
7

What happens to an electromagnetic wave as the

Chemistry
1 answer:
Vesnalui [34]3 years ago
6 0

Answer:

Energy decreases and wavelength gets longer.

Explanation:

The energy of a wave is given by :

E=hf

Where

h is Planck's constant

f is the frequency of the wave

As frequency decreases, the energy of the wave also decreases and wavelength gets longer. Hence, the option is (d).  

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Help for Number 5 please.
pshichka [43]
What subject is this ?
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3 years ago
List the number of each type of atom on the right side of the equation hbr(aq)+2naoh(aq)→2nabr(s)+h2o(l)
ser-zykov [4K]

On the basis of the given unbalanced equation, that is:

HBr (aq) + 2NaOH (aq) → 2NaBr (s) + H2O (l)

On the right side of the equation, there are 2 atoms of sodium (Na), 2 atoms of bromine (Br), 2 atoms of hydrogen (H), and 1 atom of oxygen (O₂).

After balancing the equation correctly we get:

HBr (aq) + NaOH (aq) → NaBr (s) + H2O (l)

On the right side, one atom of Na, 1 atom of Br, 1 atom of H and one atom of O₂.

5 0
3 years ago
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A1(NO3)3 name, formula for cation an formula for anion
Nostrana [21]

Answer:

Explanation:

The name of the compound is:

       Al(NO₃)₃ is Aluminium nitrate

Aluminium nitrate is an ionic compound formed when Al loses 3 valence electrons to the nitrate.

Formula of cation: A cation is a positive charged specie

              Al³⁺

 Formula of anion: Anion is a negatively charged specie;

             NO₃⁻

7 0
3 years ago
The Ksp for CaF2 is 3.9 x 10-11 at 25oC. What is the solubility?
nevsk [136]

We have to know the solubility of CaF₂.

The solubility of CaF₂ is: (c) 2.1 x 10-4 Molar

The general expression of solubility product of any sparingly soluble salt (having solubility S) with formula A_{x} B_{y} is: x^{x} y^{y} S^{x+y}.

For the compound, CaF₂, x=1, y=2 So, K_{sp}=1^{1}2^{2}S^{1+2}=4S³= 3.9 x 10-11  (Given)

S³=\frac{3.9 X 10^{-11} }{4}

S³=9.75  X 10^{-12}

S= 2.1 X 10^{-4} Molar

5 0
4 years ago
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In a hospital, oxygen is administered to patients at 3.0 atm in a hyperbaric oxygen chamber. Oxygen gas, measuring 600.0 L, is c
atroni [7]

Answer: ifkkk

Explanation:

5 0
3 years ago
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