<u>Answer:</u>
<em>The system is the Answer
</em>
<em></em>
<u>Explanation:</u>
System is the region which is taken into consideration.
While we perform a chemical reaction the system is the substance taken in the container.
So, A thermodynamic system is the amount of matter or the region in universe which is under the study.
The region outside the beaker are called as surroundings.
The beaker (the surface which separates the system from its surroundings) is said to be the boundary
System + surroundings = universe
A substance is an element if it consists of a single type of atom. A substance is a compound if it is made up of more than one element.
<h3>Elements and compounds</h3>
In chemistry, an element is defined as all pure substances consisting of the same atom. For example, magnesium and potassium metal are all elements because they consist of magnesium and potassium atoms only.
On the other hand, compounds are defined as substances consisting of 2 or more atoms of different elements. For example, sodium chloride consists of atoms of sodium and chlorine. Hence, it is considered to be a compound.
More on elements and compounds can be found here: brainly.com/question/13516179
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Answer:
it's A but I don't know the other one
Answer:
Conduction
Explanation:
Conduction is between one solid and another solid
A 1.0 ft × 1.0 ft × 1.0 ft cube of iridium (density 22.5 g/cm³) has a mass of 1.5 lb.
A cube of iridium, whose dimensions are 1.0 ft × 1.0 ft × 1.0 ft, has a volume of:
We will convert 1.0 ft³ to cm³ using the conversion factor 1 ft = 30.48 cm.
A cube of 30 cm³ of iridium has a density of 22.5 g/cm³. The mass corresponding to the cube is:
Finally, we will convert 6.8 × 10² g to lb using the conversion factor 1 lb = 453.6 g.
A 1.0 ft × 1.0 ft × 1.0 ft cube of iridium (density 22.5 g/cm³) has a mass of 1.5 lb.
You can learn more about density here: brainly.com/question/18320053
