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dolphi86 [110]
3 years ago
8

When a theory is disproved by further evidence, which of the following occurs?

Chemistry
2 answers:
kati45 [8]3 years ago
8 0
Answer: D. New data must be found to support it

When a theory is disproved by other further evidence, it is just proper to look for new data to support the theory until it is proven otherwise. It cannot be considered a failure right away but cannot be part of the scientifi knowledge too and more not to become a law. 
wolverine [178]3 years ago
8 0
<h2>Answer : Option D) New data must be found to support it.</h2><h3>Explanation :</h3>

When a theory is disproved by further evidence, then a new data must be found to support it.

As the previous approach to the theory was disproved then new ways should be explored to support it.  If the same core approach would be used to find answers then it may be difficult to get it supported by the theory. There must be new data that has to be developed with logical approach and must be supported by evidence.

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Which processes result in the realese of carbon
Zanzabum

Answer:

Carbon dioxide is added to the atmosphere by human activities. When hydrocarbon fuels (i.e. wood, coal, natural gas, gasoline, and oil) are burned, carbon dioxide is released. During combustion or burning, carbon from fossil fuels combines with oxygen in the air to form carbon dioxide and water vapor.

Explanation:

Your welcome easy.

4 0
2 years ago
Identify the oxidation number of phosphorus in the compound sodium phosphate.
Ivanshal [37]
It is +5. There -8 charge due to four oxygen atoms and +3 due to one sodium atom and 2 hydrogen atom which makes it necessary for phosphorus to have +5 charge on it to make the compound electrically neutral. The charge on phosphorus corresponds to its oxidation number.
7 0
4 years ago
a chemical company makes pure silver by reacting silver nitrate with Zinc. the company needs to make 800 grams of pure silver fo
shutvik [7]

The reaction between zinc and silver nitrate is

Zn + 2 AgNO3 \rightarrow  Zn(NO3)2 + 2 Ag

Moles of Zn = m /M = 599 /65 = 9.2 mol

Moles of AgNO3 = m /M = 1500 /169 = 8.87 mol

Silver nitrate is reacting completely to give silver

Thus, moles of Silver nitrate is equivalent to silver = 8.87

For mass of silver produced

m /M = 8.87 = m /107

m = 949.24 g

Hence, the given quantity of reactants are sufficient to produce 800 g of silver as the amount of silver produced is 949.24 g

3 0
4 years ago
Solid potassium chlorate decomposes upon heating to form
olga55 [171]

Answer:

32.6%

Explanation:

Equation of reaction

2KClO₃ (s) → 2KCl (s) + 3O₂ (g)

Molar mass of 2KClO₃ = 245.2 g/mol ( 122.6 × 2)

Molar volume of Oxygen at s.t.p = 22.4L / mol

since the gas was collected over water,

total pressure = pressure of water vapor + pressure of  oxygen gas

0.976 = 0.04184211 atm + pressure of oxygen gas at 30°C

pressure of oxygen = 0.976 - 0.04184211 = 0.9341579 atm = P1

P2 = 1 atm, V1 = 789ml, V2 = unknown, T1 = 303K, T2 = 273k at s.t.p

Using ideal gas equation

\frac{P1V1}{T1} = \frac{P2V2}{T2}

V2 = \frac{P1V1T2}{T1P2}

V2 = 664.1052 ml

245.2   yielded 67.2 molar volume of oxygen

0.66411 will yield = \frac{245.2 * 0.66411}{67.2}  = 2.4232 g

percentage of potassium chlorate in the original mixture = \frac{2.4232 * 100}{7.44} = 32.6%

3 0
3 years ago
Why do you think the bird is included in phylum Chordata but not in class Mammalia
Elis [28]

Answer:

Birds are a member of the phylum Chordata and the subphylum Vertebrata, which means they have vertebrae. They are not mammals because they lay eggs.

Explanation: Hope it helped!

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6 0
3 years ago
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