Answer:
0.4g/mL
Explanation:
The following data were obtained from the question:
Mass = 2g
Volume = 75 — 70 = 5mL
Density =?
Density = Mass /volume
Density = 2/5
Density = 0.4g/mL
The density of the substance is 0.4g/mL
The radius of the aluminum cylinder is 0.258cm
HOW TO CALCULATE VOLUME OF A CYLINDER:
- The volume of a cylinder can be calculated by using the formula below:
V=πr²h
Where;
V = volume (cm³)
r = radius (cm)
h = height (cm)
- To calculate the radius of the aluminum cylinder, the volume is required. The volume can be calculated using the formula as follows:
Volume = mass ÷ density
Volume = 1.22 ÷ 2.70
Volume = 0.452 cm³
- The radius can be calculated with the volume and height known as follows:
r = √v/πh
r = √0.452 ÷ (3.142 × 2.16)
r = √0.452 ÷ 6.78
r = √0.067
r = 0.258cm
Therefore, the radius of the aluminum cylinder is 0.258cm.
Learn more: brainly.com/question/16134180?referrer=searchResults
Answer:
1. producers would be things like plants if those were removed we would have no oxygen and herbivores would have no food
2. an area of all of the living things
3. Food chains overlap. They connect to form a food web
4. can threaten the plants and animals that originally made up the ecosystem
5. Human activities that can disturb ecosystems include polluting and clearing land for farms or buildings
6. producer, consumer and decomposer
7. Decomposers break down the waste products and dead tissue of plants and animals. They return nutrients to the soil.
Explanation:
It's a trick question because all of them contain both iconic and covalent bonds.
Hope it helps!! :) have fun
Answer:
Specifically 100 billion-400 billion.
