Answer:
3
Explanation:
Significant figures are the number of digits in a value, often a measurement, that to the degree of accuracy of the value. All non-zero numbers ARE significant. ...
Zeros between two non-zero digits ARE significant. ...
Leading zeros are NOT significant. ...
Trailing zeros to the right of the decimal are significant. ...
Trailing zeros in a whole number with the decimal shown ARE significant.contributes
The incorrect statement is that; "Aristarchus calculated the distances between the sun and earth fairly accurately."
<h3>The size of the solar system</h3>
The solar system is composed of the sun, the planets and other celestial bodies such as the moon. We can see form the experiment that Aristarchus tried to determine the relative sizes of the earth and the moon.
However, the incorrect statement is that; "Aristarchus calculated the distances between the sun and earth fairly accurately."
Learn more about the solar system: brainly.com/question/12075871
When an element requires 3 or 4 electrons to complete their octet, they cannot form ionic bond because one require a large amount of energy to completely remove an electron from ones outer shell and transfer it to the other. Ionic bond is permanent transfer of electrons. Thus, they form covalent bond.
Electronegativity difference between elements involved also plays a major role in bond formation. If electronegativity between elements is almost similar, then they will form covalent bonds whereas if difference is large, they will form ionic bond. Calcium and Carbon have greater electronegativity difference and hence it forms ionic bond with Calcium.
A. All the changes to a system cancel out.
Explanation:
In a dynamic equilibrium, it looks as if nothing is happening for reversible reactions because the changes simply cancels out.
This will then appear like no change is happening in it. When external stress is introduced into the system, it will annul its effect in order to remain in equilibrium.
- The system must be involved in reversible chemical processes no matter how small the extent of the reversibility.
- The rate of forward process is equal to the rate of the backward process.
- The system is closed and cannot exchange energy.
- The free energy change of the system is zero.
- There is no change in concentration of each species in equilibrium.
- The system offers resistance to any change in factors.
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Equilibrium brainly.com/question/10838453
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this is based on charles law
volume of gas is directly proportional to the temperature
it mean as temperature increases volume increases and vice versa
hope you got answer for you question