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andriy [413]
3 years ago
13

In 1887, Albert A. Michelson and Edward W. Morley conducted an experiment to measure the speed at which the Earth moves through

the ether. Their experiment was so refined that it should have finally detected the luminiferous ether. But it didn't. Repeated trials verified the surprising result that the ether did not exist. How did the failure of the Michelson-Morley experiment change scientific theories of light? A. The Michelson-Morley experiment provided a new theory that fit the data better than the theory of the luminiferous ether did. B. The results of the Michelson-Morley experiment had to be rejected because the theory of the luminiferous ether was so well established. C. The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, so the theory had to be rejected. D. The Michelson-Morley experiment proved that the luminiferous ether moved at the exact same speed as the Earth during all seasons of the year.
Chemistry
2 answers:
vichka [17]3 years ago
7 0
<span> C.The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, so the theory had to be rejected. </span>
frutty [35]3 years ago
3 0

Answer:

The correct answer is option C. "The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, so the theory had to be rejected".

Explanation:

The notorious Michelson-Morley experiment changed the way empty spaces were perceived at their time. Before 1887, the scientific community believed the existence of the luminiferous ether, a substance that supposedly was in empty spaces and allowed electromagnetic waves propagation. The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, and the experiment was so refined that the theory had to be rejected.

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What is the molar mass of (NH4)3 PO4? 113g, 121g, 149g, 339g
allochka39001 [22]
(NH4)3PO4 :

N = 14 * 3 =  42
H = 1 * 12 = 12
P = 31 * 1 = 31
O = 16 * 4 = 64
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42+12+31+64 =  149 g / mol

Hope this helps!.


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5 0
3 years ago
What is the mass of solid NH4Cl formed when 75.5g of NH3 is mixed with an equal mass of HCl? What is the volume of the gas remai
taurus [48]

Answer:The volume of the remaining gas that is ammonia is 23.85 L.

Explanation:

NH_3(g)+HCl(g)\rightarrow NH_4Cl(s)

Moles of NH_3=\frac{\text{mass of} NH_3}{\text{Molar mass of}NH_3}=\frac{75.5 g}{17.03 g/mol}=4.43 mole

Moles of HCl of gas = \frac{\text{mass of} HCl}{\text{Molar mass of}HCl}=\frac{75.5 g}{36.5 g/mol}=2.06 mol

According to reaction 1 mole of HCl reacts with 1 mol of NH_3 then 2.06 moles of HCl will react with = 2.06 moles of NH_3

Moles left of ammonia left = 4.43 - 2.06 = 2.36 moles

Volume of the gas will be given by Ideal gas equation: PV=nRT

Pressure = 752 mmHg = 752 × 0.0031 atm = 2.33 atm

R = 0.08026 L atm/K mol

V = ? , n = number of moles of ammonia

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The volume of the remaining gas that is ammonia is 23.85 L.

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