Answer:
2
Explanation:
why because it is 40/20 that give you and I 2
so therefore your answer is 2
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There are materials embedded in rocks forming it shape and properties
Answer:
17%
Explanation:
Given parameters:
Atomic mass of nickel isotope = 57.9g/mol
Experimental value of atomic mass = 59.6g/mol
Unknown:
Percentage error in the measurement.
Solution:
The percentage error shows how much uncertainty was introduced into a measurement. To calculate this, we simply use the expression below:
Percentage error =
Percentage error = x 100 = 17%
Answer:
158g
Explanation:
To calculate the "weight" (mass) of ethyl alcohol, we have to use this formula:
- Density will have units of gmL when dealing with a liquid or units of gcm3 when dealing with a solid.
The mass has units of grams, g.
The volume will have units of mL or cm3
We are given the density and volume, both of which have good units so all we have to do is rearrange the equation to solve for the mass:
density×volume=massvolume×volume
Density×Volume = Mass
0.789gmL×200.0mL
Thus, ethyl alcohol weighs 158g.
Answer:
The dust and gas particles of a slowly rotating nebula gradually came together to form a cloud with a huge central bulge surrounded by a flat ring of dust and gas. The sun was formed from the material in the bulge. The flat ring became several rings. In each ring, a planet formed and continued to revolve around the sun in the plane of the ring it came from.
Explanation: