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rusak2 [61]
3 years ago
13

When scientists first studied electromagnetic energy, many theories were proposed to explain how these waves travel through spac

e. Which statement below best describes how scientists arrived at the current understanding of electromagnetic energy?
Scientists all agreed with a single researcher who proposed the current theory.


Scientists completed internet searches of all available data to arrive at the current theory.


Scientists debated the theories with each other and compared the theories with scientific observations.


Scientists were able to observe the light from the brightest star in space, which verified the current theory
Chemistry
2 answers:
ValentinkaMS [17]3 years ago
5 0

Answer:   Scientists debated the theories with each other and compared the theories with scientific observations.

         c your welcome

Explanation:

Aliun [14]3 years ago
4 0

Answer:

Scientists debated the theories with each other and compared the theories with scientific observations

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The chemical compound, "AB" has a molar mass of 74.548 g/mol.
sladkih [1.3K]

Answer:

47.55%

Explanation:

4 0
3 years ago
Kp/Kc for reaction for the equilibrium, A(g) ⇌ C(g)+B(g), is _______.
Sophie [7]

Kp/Kc = RT

<h3>Further explanation</h3>

Given

Reaction

A(g) ⇌ C(g)+B(g)

Required

Kp/Kc

Solution

For reaction :

pA + qB ⇒ mC + nD  

\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}

While the equilibrium constant Kp is based on the partial pressure  

\large {\boxed {\bold {Kp ~ = ~ \frac {[pC] ^ m [pD] ^ n} {[pA] ^ p [pB] ^ q}}}}

The value of Kp and Kc can be linked to the formula '  

\large {\boxed {\bold {Kp ~ = ~ Kc. (R.T) ^ {\Delta n}}}}

R = gas constant = 0.0821 L.atm / mol.K  

Δn=moles products - moles reactants or

number of product coefficients-number of reactant coefficients  

For reaction :

A(g) ⇌ C(g)+B(g)

number of product coefficients = 1+1=2

number of reactant coefficients   = 1

Δn= 2 - 1 =1

So Kp/Kc = RT

5 0
3 years ago
On a mission to a newly discovered planet, an astronaut finds gallium abundances of 61.29% for 69Ga and 39.71% for 71Ga. What is
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(exact weight of isotope #1) (abundance of isotope #1) + (exact weight of isotope #2) (abundance of isotope #2) = average atomic weight of the element(68.72*61.29) + (39.71*70.92) = 4211.84 + 2816.237028.07/100= 70.28 

70.28 is the atomic mass of Gallium for the location
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3 years ago
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I’m am most positive the answer is c. For cat
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3 years ago
What is a subcategory of a period?
Xelga [282]
The answer is epoch d.
5 0
3 years ago
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