I believe it is less dense.. that is why ice floats on water
Answer:
The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope. (Atomic mass is also referred to as atomic weight, but the term "mass" is more accurate.)
Answer:
To know if a reaction/experiment is exothermic or endothermic depends on the temperatures of the two liquids you are trying to mix. First before mixing your liquids take the temperature of both of them and write it down. then mix both liquids together to get your reaction and take the temperature of both mixed together. write it down. Did the temperature of your liquids increase or decrease? this question will determine weather the reaction was endothermic or exothermic. Endothermic meaning the temperature got cooler and Exothermic meaning the temperature got hotter/warmer
EX. | starting temperature- 72 F | ending temperature- 82 F | Exothermic
EX 2. | starting temperature- 72 F | ending temperature- 69 F | Endothermic
Explanation: I hope this helped you :)
Mass of NaCl L 13.75 g
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Further explanation</h3>
Given
The solution of 5.5% by mass
mass of commercial bleach solution : 250 g
Required
mass of NaCl
Solution
Percent mass (% w/w) = percent mass of solute in 100 g mass of solution
Solution = solute + solvent
Solute = NaCl
Solution = Commercial bleach
Can be formulated :
Input given values in formula :
