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son4ous [18]
3 years ago
15

What does it mean when water is supercooled?

Chemistry
1 answer:
Alex Ar [27]3 years ago
4 0
Supercooling<span>, a state where liquids do not solidify even below their normal freezing point. Means sometimes we have liquid water below 0 degree C.</span>
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What is the atomic number of the yet-undiscovered element directly below francium ( Fr) in the periodic table?
kakasveta [241]
The atomic number of Francium is 87.
4 0
3 years ago
The p-value of a statistical test depends on all of the following, except:
vaieri [72.5K]

Answer:

The correct option is e.

Explanation:

p-value is the probability value for a given statistical model, the probability that, when the null hypothesis is true.

For two two samples the formula of test statistics is

t=\frac{(\overline{x}_1-\overline{x}_2)-(\mu_1-\mu_2)}{\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}}

where,

\overline{x} is sample mean

\mu is population mean.

s is standard deviation.

n is sample size.

Variance is the square of standard deviation.

It means variance, mean, numbers of samples is used in calculation of p-value.

Degree of freedom define the shape of the t-distribution that your t-test uses to calculate the p-value.

d.f.=n_1+n_2-2

p-value of a statistical test depends on all of the following, except median.

Therefore the correct option is e.

4 0
3 years ago
Classify each process according to direction of heat flow.
MrRissso [65]

Answer:

heat flows in

heat flows out

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Explanation:

6 0
3 years ago
Read 2 more answers
The solid has a mass of 180g. What is the density of the solid?
xxTIMURxx [149]
To find density we have to know the values of density and mass. Here mass is given which i 180g.
we know the formula to find the density is:
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so the density will be 180 / volume = 180g per unit volume
if we know the volume, we can find exact value of density.
5 0
3 years ago
an isotope of cesium (cesium-137) has a half-life of 30 years if 1.0g of cesium-137 disintegrates over a period of 90 years how
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The answer is after 3 half lives
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3 years ago
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