What is anything that has mass and takes up space?
1) Weight
2) Volume
3) Density
4) Matter
When you measure the boiling point of mercury, you are investigating a ____.
1) Chemical change
2) Chemical property
3) Physical change
4) Physical property
Ab object weighing 90 N has a volume of 45mL and a mass of 9.0 g. What is its density?
1) 0.10 g/mL
2) 0.20 g/ mL
3) 5.0 g/ mL
4) 10 g/ mL
PLEASE HELP. I AM NEEDING TO PASS THIS CLASS
The best way to pass this class (or any class) is to carefully study the text materials and then try to answer the questions.
4,4 and the last one is ridiculous. 9g of mass cannot weight 90 newtons on any planet in our solar system Weight=massINkg*9.8N/kg
To answer the first question, "What is anything that has mass and takes up space?" you need to understand the concept of matter. Matter refers to anything that has mass and occupies space. Therefore, the correct answer is 4) Matter.
For the second question, "When you measure the boiling point of mercury, you are investigating a ____." you need to know the difference between chemical changes and physical changes, as well as chemical properties and physical properties. Chemical changes involve a substance's composition being altered, while physical changes do not alter the substance's composition. Likewise, chemical properties describe how a substance interacts with other substances, while physical properties describe the characteristics of a substance that can be observed without changing its composition.
In this scenario, measuring the boiling point of mercury involves observing a characteristic of mercury, which is a physical property. Therefore, the correct answer is 4) Physical property.
Lastly, to find the density of an object, you need to know its mass and volume. Density is defined as the mass per unit volume. So, you can calculate the density by dividing the mass of the object by its volume.
In this case, the mass of the object is given as 9.0 g and the volume is given as 45 mL. To convert the volume from milliliters to liters, you divide 45 mL by 1000, which gives you 0.045 L.
Now, you can calculate the density by dividing the mass (9.0 g) by the volume (0.045 L).
Density = mass / volume
Density = 9.0 g / 0.045 L
Density = 200 g/L
Therefore, the correct answer for the density of the object is 2) 0.20 g/mL.
Keep in mind that it's important to understand the underlying concepts and principles of the subject rather than relying solely on memorizing answers. By understanding the concepts, you will be better equipped to solve related problems in the future. Good luck with your studies!