4

select the correct answer.

in a scientific investigation, what is the name for a prediction that can be tested?

a.

conclusion

b.

evidence

c.

hypothesis

d.

verification

C.) hypothesis

A hypothesis is a prediction scientists make based on observations.  This hypothesis is tested to find out if it is correct or incorrect.  A conclusion is the result of an experiment.  The evidence is what proved the hypothesis to be correct or incorrect.  Verification uses the data to confirm the justification of the hypothesis.

Hope this helps.

6.75 L

Explanation:

The following data were obtained from the question:

Mass of NO = 39.6 g

Pressure (P) = 5.54 atm

Temperature (T) = 72°C

Volume (V) =...?

Next, we shall determine the number of mole in 39.6 g of NO. This is illustrated below:

Mass of NO = 39.6 g

Molar mass of NO = 14 + 16 = 30 g/mol

Mole of NO =..?

Mole = mass /Molar mass

Mole of NO = 39.6 /30

Mole of NO = 1.32 moles

Next, we shall convert 72°C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Temperature (T) = 72°C

Temperature (T) = 72°C + 273

Temperature (T) = 345 K

Finally, we shall determine the Volume occupied by NO as follow:

Pressure (P) = 5.54 atm

Temperature (T) = 345 K

Number of mole (n) = 1.32 moles

Gas constant (R) = 0.0821 atm.L/Kmol

Volume (V) =...?

PV =nRT

5.54 × V = 1.32 × 0.0821 × 345

5.54 × V = 37.38834

Divide both side by 5.54

V = 37.38834 / 5.54

V = 6.75 L

Therefore, the volume occupied by 39.6 g of NO is 6.75 L