All categories

4 years ago

During which part of the scientific method would error bars be used?

Chemistry

1 answer:

VikaD [51]4 years ago

7 0

Answer:

The correct answer is B. Analysis

Explanation:

Error bars are part of the statistical analysis in the scientific method. Once the scientist have collected the data, he or she proceed to the data analysis. A very common way of comparing the data variability is to use error bars in ghaphical representations. From these bars, it can be estimated the error of a determination and experimental groups are compared.

You might be interested in

write a chemical equation that represents baking soda (NaHCO3) reacts with hydrochloric acid (HCI) to produce sodium chloride, w

swat32

Answer:

NaHCO3 + HCl = NaCl + H2O + CO2

Explanation:

The total number of atoms of each element on either side of the equation must be equal.

7 0

3 years ago

uppose you are titrating an acid of unknown concentration with a standardized base. At the beginning of the titration, you read

sweet-ann [11.9K]

Answer:

$V_{base}=18.00mL$

Explanation:

Hello,

In this case, since you have both the final and initial volume for the titration procedure, clearly, the used volume is computed by the subtraction between them, since it accounts for the employed volume of the base, it turns out:

$V_{base}=20.03mL-2.03mL\\\\V_{base}=18.00mL$

Best regards.

4 0

3 years ago

What is a positive exponent means?

Inessa05 [86]

An exponent is a number having a power. If the power of an exponent is positive then it is called as positive exponent.

7 0

3 years ago

The diagram below shows the movement of particles what does this piece of evidence best support

fgiga [73]

Answer is: the collision theory.

The collision theory states that a certain fraction of the collisions (successful collisions) cause significant chemical change.

The successful collisions must have enough energy (activation energy), on this diagram that energy is represented with arrow up.

Chemical bonds are broken (between blue and red-black molecules) and new bonds are formed (between blue-red and blue-black molecules), as it is represented on diagram.

8 0

4 years ago

Read 2 more answers

Using de Broglie's equation, λ = h/mv which would have a larger wavelength, a slow-moving proton or a fast-moving golf ball? Exp

TiliK225 [7]

Answer : The correct option is a slow-moving proton.

Explanation :

The de Broglie's equation is,

$\lambda =\frac{h}{mv}$

where,

$\lambda$ = wavelength of particle

h = Planck's constant

m = Mass of particle

v = speed of particle

From the de Broglie's equation, we conclude that there is an inverse relationship between the wavelength and speed or mass of particle. That means the lower the speed and mass of particle, higher will be the wavelength of particle and vice-versa.

So, a slow-moving proton have a larger wavelength due to slow speed of proton.

5 0

3 years ago