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Phoenix [80]
3 years ago
10

The students who conducted the shadow length experiment concluded that their results concluded that their results supported thei

r hypothesis. Can their supported hypothesis be called a scientific theory? Why or why not?
Chemistry
1 answer:
scZoUnD [109]3 years ago
6 0
Confirmation bias<span>, also called </span>confirmatory bias<span> or </span>myside bias, is the tendency to search for, interpret, favor, and recall information in a way that confirms one's preexisting beliefs or hypotheses, while giving disproportionately less consideration to alternative possibilities.[Note 1][1]<span> It is a type of </span>cognitive bias<span> and a systematic error of </span>inductive reasoning<span>. People display this bias when they gather or remember information selectively, or when they interpret it in a </span>biased way<span>. The effect is stronger for </span>emotionally<span> charged issues and for deeply entrenched beliefs. People also tend to interpret ambiguous </span>evidence<span> as supporting their existing position. Biased search, interpretation and memory have been invoked to explain </span>attitude polarization<span> (when a disagreement becomes more extreme even though the different parties are exposed to the same evidence), </span>belief perseverance<span> (when beliefs persist after the evidence for them is shown to be false), the irrational primacy effect (a greater reliance on information encountered early in a series) and </span>illusory correlation<span> (when people falsely perceive an association between two events or situations).</span>
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What is the main difference in covalent bonds in diatomic chlorine and diatomic oxygen? diatomic means two atoms of the same typ
Aneli [31]
The correct response is C. Chlorine forms 1 covalent bond while Oxygen forms 2 covalent bonds.
3 0
4 years ago
Four ice cubes at exactly 0 ∘c with a total mass of 52.5 g are combined with 160 g of water at 90 ∘c in an insulated container.
horrorfan [7]
Heat gained by ice cubes would be equal to the - heat lost by warm water 

The moles of ice is: 50.5 g / 18.0 g/mol = 2.81 mol 

Heat required to melt all of the ice is equal to: 2.81 mol X 6.02 kJ/mol = 16.9 kJ = 16890 J 

Now, know whether the warm water will still be above 0C when it loses this much heat:
-1690 J = 160 g (4.184 J/gC) (Delta T) Delta T = -25C 

In order to solve for the final temperature, going back to include warming of the melted ice to a final temperature: 

q(ice/water) = - q(warm water) 

moles (Delta Hf) + m c (T2-T1) = - m c (T2-T1) 

50.5 g / 18.0 g/mol = 2.81 mol 

2.81 mol X 6.02 kJ/mol + 50.5g (4.184 J/gC) (T2-0) = -160g (4.184 J/gC) ( T2-80) 

16916 + 211.3T2 = -669.4 T2 + 53555 

36639 = 880.7 T2 

T2 = 41.6 C
6 0
3 years ago
Read 2 more answers
A container initially holds 1.24mol of hydrogen gas and has a volume of 27.8L. Hydrogen gas was added to the container, and the
Fantom [35]

Answer:

After increasing the volume, we have 1.81 moles of hydrogen gas in the container

Explanation:

Step 1: Data given

Number of moles hydrogen gas (H2) = 1.24 moles

Volume of hydrogen gas (H2° = 27.8 L

The final volume is increas to 40.6 L

Step 2: Calculate the new number of moles

V1/n1 = V2/n2

⇒with V1 = the initial volume = 27.8 L

⇒with n1 = the initial number of moles H2 = 1.24 moles

⇒with V2 = the final volume = 40.6 L

⇒with n2 = the new number of moles = TO BE DETERMINED

27.8L / 1.24 moles = 40.6 L / n2

n2 = 40.6 / (27.8/1.24)

n2= 1.81 moles

After increasing the volume, we have 1.81 moles of hydrogen gas in the container

3 0
3 years ago
Potential energy sample question: A block is sitting on a platform 20 m high. It weighs 50 kg. How much potential energy does it
ioda

Answer:

The potential energy is 9800 J.

Explanation:

given information:

mass, m = 50 kg

height, h = 20 m

to calculate the potential energy, we can use the following formula

PE = mgh

where

PE = potential energy (Joule)

m = mass (kg)

h = height (m)

g = gravitational constant (9.8 m/s²)

so,

PE = mgh

    = 50 x 9.8 x 20

    = 9800 J

3 0
4 years ago
Which of the following contains an atom that does not obey the octet rule? BrF3 SiO2 NaCl BrF
mrs_skeptik [129]

The octet rule signifies towards the capability of the atoms to prefer to exhibit eight electrons in the valence shell. In case, when the atoms possess lesser than eight electrons, they seem to react and produce more stable components. While discussing octet rule, one does not consider d or f electrons.  

According to the octet rule, the atoms of the prime-group elements seem to bind in such a manner that each atom exhibit eight electrons in its valence shell, providing it the similar electronic configuration as a noble gas.  

In the given question, in BrF3, fluorine follows octet rule, while bromine does not follow the octet rule.  


5 0
3 years ago
Read 2 more answers
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