There is a CHUBBY dog,a skinny dog, and a regular dog. which one doesn't skip a meal?

A scientist wants to make certain the results of her experiment are accurate. She has repeated the procedure numerous times and

Romashka [77]

The correct answer is D. Have other scientists repeat the procedure and obtain the same results.

Explanation:

One of the most accurate ways to validate the results of an experiment is to allow peers (other scientists) to review the experiment and repeat it, which is known as replication. This process is required to make sure the results are accurate because if the experiment is repeated by a different scientist and the results are different this shows the data is not consistent and therefore the results are invalid. Moreover, inconsistency or lack of replication can occur due to incorrect processes or bias by the scientist.

According to this, the next step in this situation is to "have other scientists repeat the procedure and obtain the same results".On the other hand, repeating the experiment but changing one of the variables or the procedures is not a correct step because this will change the essence of the experiment and lead to different results.

8 0

4 years ago

Follow my Instagram ch.eyenne03 im bored free points

professor190 [17]

Answer:

Okat and thanks!

Explanation:

4 0

3 years ago

Read 2 more answers

The population of two different villages are modeled by the equations shown below. The population (in thousands) is represented

PilotLPTM [1.2K]

Answer:

1990 and 2010

$y_l_w(15)=315\hspace{3}thousands\\y_l_c(15)=315\hspace{3}thousands\\y_l_w(35)=715\hspace{3}thousands\\y_l_c(35)=715\hspace{3}thousands$

Explanation:

Let:

$y_l_w=Population\hspace{3}of\hspace{3}Lewiston\\y_l_c=Population\hspace{3}of\hspace{3}Lockport$

We need to know, in what year(s) the villages had the same population, mathematically this is:

$y_l_w=y_l_c$

So:

$x^2-30x+540=20x+15\\\\Subtract\hspace{3}20x\hspace{3}from\hspace{3}both\hspace{3}sides\\\\x^2-50x+540=15\\\\Subtract\hspace{3}15\hspace{3}from\hspace{3}both\hspace{3}sides\\\\x^2-50x+525=0$

Solving for x:

Factoring

$(x-15)(x-35)=0$

Hence:

$x=15\\\\or\\\\x=35$

Therefore the year(s) which the village had the same population are:

$1975+15=1990\\\\and\\\\1975+35=2010$

In order to find the population of both cities during the year(s) of equal population, just evalue the equations at x=15 and x=35:

$y_l_w(15)=315\hspace{3}thousands\\y_l_c(15)=315\hspace{3}thousands\\y_l_w(35)=715\hspace{3}thousands\\y_l_c(35)=715\hspace{3}thousands$

7 0

3 years ago

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that

sveta [45]

The mass of KNO₃ that is required to be added to 275 ml of water is; 108.3 g

<h3>Dissolution of a Solute</h3>

We are given;

K f = 1.86 °C.kg/m

Mass of solution = 275 g = 0.275 Kg

Freezing point of solution = −14.5 °C

Freezing point of pure water = 0.0 °C

We know that;

Δ T = Freezing point of solve nt - Freezing point of solut ion

Thus;

Δ T = 0°C - ( -14.5 °C)

Δ T = 14.5 °C

Also;

Δ T = K f * m * i

where;

K f is free zing con stant

m is m o l a l i t y

i is V a n t H o f f factor

Since KNO₃ produces two particles then; i = 2

Making the m the subject of the formula gives;

m = ΔT /(K × i)

m = 14.5 °C/(1.86 °C . kg/m o l × 2)

m = 3.898 m

Now;

M o l a l i t y = number of mo les/mass of solution in kilograms

Thus;

number of mo les of solute = m o l a l i t y × mass of solution in kilograms

number of mo les of solute= 3.898 m × 0.275 Kg

number of mo les of solute= 1.072 moles

Thus;

Number of mo les = mass/mo lar mass

M o lar mass of KNO₃ = 101 g/mol

Mass = Number of mo les × 101 g/mol

Mass = 1.072 moles × 101 g/mol

Mass of KNO₃ = 108.3 g

Read more about dissolution of a solute at; brainly.com/question/1945924

6 0

2 years ago

How does the narrator’s viewpoint compare to the turtle’s in this passage? the narrator and the turtle both agree that jim talks

andreev551 [17]

Answer:

The answer is A. The narrator and the turtle both agree that Jim talks too much.

Explanation:

6 0

2 years ago

Read 2 more answers