Answer:
Dependent variable: Amount of NaCI dissolved in water
Explanation:
In an experiment, the DEPENDENT VARIABLE is the variable that the experimenter measures. It is the variable whose response is dependent on the independent variable.
In this experiment, researchers were studying the temperature and the amount of NaCI dissolved in water i.e. how a change in temperature affected the amount of NaCl dissolved. They conducted two tests one changing the temperature (experimental group) and another without changing the temperature (control group) the temperature change. It is clear that the RESPONDING/DEPENDENT VARIABLE IN THIS EXPERIMENT IS THE AMOUNT OF NACL DISSOLVED.
<span>The molar volume of ammonia at standard temperature and pressure (STP) is 22.4L. This is the standard molar volume of any gas at these conditions.</span>
Answer:
4.17 g/mL
Explanation:
In order to determine the density of the solid, we need to know both its mass and its volume.
<em>The mass </em>is already given to us by the problem, 45.0 g.
As for <em>the volume</em>, we can determine it by using <u>Archimedes' principle.</u> It states that the volume of water displaced by an object when submerged is equal to the object's volume.
- Water displaced = 75.8 mL - 65 mL = 10.8 mL
Finally we <u>calculate the density</u> of the solid:
- Density = mass / volume = 45.0 g / 10.8 mL
Table slat has a low melting pointy while mercury has a high one
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