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vitfil [10]
3 years ago
13

Compare blue and violet light. which one has the highest energy? Longest wavelength?

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
4 0

Answer:

Blue

Explanation:

Blue would have the longest wave length because following ROY G BIV the wave length distance between the two decreases as you move from Red to Violet.

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Qué volumen ocupan 5 moles de un gas que se encuentran a 28°C y 3 atm de presión?
lys-0071 [83]

<em>What volume do 5 moles of a gas occupy at 28 ° C and 3 atm of pressure?</em>

<em />

<h3>Further explanation</h3>

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

n= 5 moles

T=28 +273=301 K

P=3 atm

The volume of the gas :

\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{5\times 0.082\times 301}{3}\\\\V=\boxed{\bold{41.136~L}}

5 0
3 years ago
Match each section of the atomic structure
Lesechka [4]

<>"Atomic particles. Protons and neutrons are heavier than electrons and reside in the nucleus at the center of the atom. Electrons are extremely lightweight and exist in a cloud orbiting the nucleus. The electron cloud has a radius 10,000 times greater than the nucleus."<>

4 0
3 years ago
Read 2 more answers
A neutral atom has 12 protons and 13 neutrons in its nucleus. What is its mass number?
Thepotemich [5.8K]

Answer: 68

Explanation: u times them

3 0
3 years ago
Enter the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation AZX.
Vikki [24]
Answer is ₂₀⁴²Ca.<span>

In AZX notation
   A<span> - Represents the </span>mass number of atom.
         Mass number = number of protons + number of neutrons.
<span>         It is shown at the </span>above of the left side<span> of the atom.</span>
<span>         Here it is </span>42. 

<span>  </span>Z - Represents the atomic number.<span>
       Atomic number = number of protons.
       </span><span>It is shown at the</span> bottom line of the left side of the atom.<span>
       </span>Here it is 20.<span>
 
  X - </span>Represents the symbol of the atom.<span>
     <span>   </span></span>Here</span> X is Ca.<span>

</span>
5 0
3 years ago
Read 2 more answers
Two solutions, initially at 24.60 °C, are mixed in a coffee cup calorimeter (Ccal = 15.5 J/°C). When a 100.0 mL volume of 0.100
yulyashka [42]

Answer:

ΔH = -59.6kJ/mol

Explanation:

The reaction that occurs between Ag⁺ and Cl⁻ ions is:

Ag⁺ + Cl⁻ → AgCl(s) + ΔH

To find ΔH we need to obtain moles of reaction and heat released in the reaction because ΔH is defined as heat released per mole of reaction.

<em>Moles of reaction:</em>

Moles of Ag⁺ and Cl⁻ added are:

Ag⁺: 0.100L * (0.100mol / L) = 0.01moles

Cl⁻: 0.100L * (0.200mol / L) 0 0.02 moles

That means limiting reactant is Ag⁺ and moles of reaction are 0.01 moles

<em>Heat released:</em>

To find heat released we must use coffe cup calorimeter equation:

Q = C*m*ΔT

<em>Where C is specific heat of solution (4.18J/g°C), m is the mass of solution (200g because there are 100 + 100mL = 200mL and density of solution is 1g/mL) and ΔT is change in temperature (25.30°C - 24.60°C = 0.70°C).</em>

Replacing:

Q = C*m*ΔT

Q = 4.18J/g°C * 200g * 0.70°C

Q = 585,2J

Is total heat released.

The calorimeter absorbs:

15.5J / °C * 0.7°C = 10.85

Thus, when 0.01 moles reacts, 585.2J + 10.85  = 596.05J are released (Heat released is heat abosrbed by calorimeter + Heat absorbed by water) and ΔH is:

ΔH = 596.05J / 0.01 moles =

ΔH = 59605J / mol =

<h3>ΔH = -59.6kJ/mol</h3>

<em>As heat is released, ΔH < 0.</em>

6 0
3 years ago
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