Pure honey has a density of 1.42g/ml. if you have a sample of honey that has a mass of 20 grams, what is the volume of your sample

By definition, density is mass per volume.

Because volume is the unknown, solve for v.

Plug in the given numbers:

The only operation done in the problem is division, and the number with the least significant figures is 20 (1 s.f.), so with correct significant figures, the volume is 10 ml.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

the answer is option a.