The answer must show the lowest number of significant number of significant places in the decimal region
Explanation:
5.67 + 0.00032 adds up to 5.67 because the least number of significant figures in the decimal place 2.
- To add up two numbers, that are in decimal places.
- Identify the number of significant figures in them
- Their addition should sum up to a value no more than the significant figures to the right of the decimal having the lowest accuracy.
5.67
+ 0.00032
to the right of the decimal, they have two significant numbers.
The answer should also be this way.
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Answer:
Increases I had this question
The answer is B.
Step By Step Explanation:
<span>Molality(m) or molal concentration is a measure
of concentration and it refers to amount of substance in a specified amount of
mass of the solvent. Used unit for molality is mol/kg which is also
sometimes denoted as 1 molal. It is equal to the moles of solute (the substance
being dissolved) divided by the kilograms of solvent (the substance used to
dissolve).</span>
Molarity(M) or molar concentration is also a
measure of concentration and represents the amount of substance per unit volume
of solution(number of moles per litre of solution. Used unit for molarity is
mol/L or M. A solution with a concentration of 1 mol/L is equivalent to 1 molar
(1 M).
Molality is preferred when
the temperature of the solution varies, because it does not depend on
temperature, (neither number of moles of solute nor mass of solvent will be affected
by changes of temperature), while molarity changes as temperature changes(volume
of solution changes as temperature changes).