When a syringe is inserted into the flask containing methane gas the plunger of the syringe is raise up. This led to filling of the syringe with the gas.This relate to Charles law which explain how gas expand with increase in temperature.
This problem is requiring the empirical formula for CaCO₃, which is its molecular formula, and turns out to be equal, this is A. CaCO3 according to the following:
<h3>Empirical formulas:</h3><h3 />
In chemistry, molecular formulas show both the actual type and number of atoms in a chemical compound, based on the elements across the periodic table and the subscripts standing for the number of atoms in the compound.
However, the empirical formula is a reduced expression of the molecular one, which shows the minimum number of atoms in a compound after simplifying to the smallest whole numbers.
In such a way, since the given compound is CaCO₃ and both Ca and C have a one as their subscript, it is not possible to simplify any further and therefore the empirical formula equals the molecular one this time, making the answer to be A. CaCO3.
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Answer:
Explanation:
A measurement is the action of measuring something, or some amount of stuff. So it is important to measure certain things right, distance, time, and accuracy are all great things to measure. By measuring these things or in other words, by taking these measurements we can better understand the world around us.
An ion must be shaped when a neutral atom picks up or loses electrons.
Since electrons convey a negative charge, picking up electrons will bring about the formation of a contrarily charged ion, or anion. Thus, losing electrons will bring about the formation of an emphatically charged ion, or cation.
For your situation, the sulfide anion, S^2−1, conveys a(2−) negative charge, which must imply that it picked up electrons.
All the more particularly, it picked up 2 electrons. A neutral sulfur atom has an atomic number equivalent to 16, which implies that it has 16 protons inside its nucleus and 16 electrons encompassing its nucleus.
For every electron picked up, the ion's general charge diminishes by 1 unit, which additionally affirms the way that the unbiased sulfur atom picked up 2 electrons to get the (2−) charge.
