Which of these experimental designs could lead to bias?

2 answers:

5 0

C is biased because the people were paid to evaluate the car. They are more likely to say better things about it than if they weren't paid.

bulgar [2K]3 years ago

3 0

I believe it is B. The meaning of bias is prejudice in favor or against someone or a group compared to another in an unfair way. Many can have a one sided opinion about something such as who is going to win the race. However, choosing different cheese is more of an opinion showing which they prefer more than being bias.

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A 25.00-ml sample of propionic acid, hc3h5o2, of unknown concentration was titrated with 0.141 m koh. the equivalence point was

Scorpion4ik [409]

The concentration of propionate ions at equivalent point is 0. 084 M
calculation
write the equation for reaction
HC3H5O2 + KOH → H2O + KC3H5O2

find the moles of KOH used
moles= molarity × volume in liters
volume in liters = 37.48 ml/1000 =0.03718L
molarity = 0.141 M

moles is therefore = 0.141 M x0.03718 = 5.24238 x10^-3 moles

by use of mole ratio between KOH and K3C3H5O2 which is 1:1 the moles of K3C3H5O2 is also = 5.24238 x10^-3 moles

molarity is therefore = number of moles/volume in liters
volume in liters = 25/1000 +37.48/1000=0.06248 L

molarity of propionate ions is therefore = (5.24238 x10^-3) / 0.06248 = 0.084 M

7 0

3 years ago

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cricket20 [7]

A atom, molecule, element is smallest to largest

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The increase in the rate of solvation with a rise in solvent temperature is mainly due to a(n)

katrin2010 [14]

The answer would be b

3 0

3 years ago

The model of the atom evolved over time as scientific investigations uncovered new properties and observations about the atom. D

wariber [46]

Atomic physics is the field of physics that <span>studies atoms.
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4 0

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Hydrochloric acid has the chemical formula HCl. A certain quantity of hydrochloric acid has 2.39x1024 atoms. How many moles of h

nasty-shy [4]

Answer: 3.97 moles HCl

Explanation: Solution:

2.39x10²⁴ atoms HCl x 1 mole HCl /

6.022x10²³ atoms HCl

= 3.97 moles HCl

8 0

3 years ago