The salt desolves into the water which forms a solution which is called a mixture.
<h2>Answer:</h2>
Scientific questions are question which are solved involving experiments, observations, or surveys.
Like, Is cancer caused by uncontrolled cell division.
<h3>Explanation:</h3>
Scientific questions are always testable questions. They can be solved by using scientific techniques like PCR, titration etc.
Here the given question in the example can be tested, by making the observations of the cell division of the cancer patients. Then by inducing uncontrolled cell division into normal cells to look for the effect of cell division on cancer.
The questions like, "is sadness can be controlled by talking?" is not a scientific question.
180.189 g was the mass of the zinc sample with a specific heat of zinc is 0.390 j/g°C.
<h3>What is specific heat capacity?</h3>
The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).
Using specific heat capacity formula here:
× 
× Δ
= 
× 
× Δ
0.390J/g°C × ×77.4ºC = 4.184J/g°C× 65.0g × 20.00ºC.
= 180.189 g
Hence, 180.189 g was the mass of the zinc sample.
Learn more about the specific heat capacity here:
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Answer: NaF is ionic. NF3 is covalent. SiF4 is ionic. CaF2 is Ionic and NH4F is also ionic. Ionic compounds transfer electrons whereas covalent compounds share electrons hence the word "co". Also, ionic compounds are formed with metal and nonmetal. Where a covalent is with 2 nonmetals. Only ionic compounds would produce fluoride in water because ionic compounds can dissolve in water and covalent compounds cant.
Answer:
B
Explanation:
If the frequency is doubled, the wavelength is only half as long.
If the wavelength Doubled, the frequency is reduced.
