Answer:
The particles in a liquid are close together (touching) but they are able to move/slide/flow past each other.
Explanation:
Answer:
The mass of glycerol that the student should weigh out depends on the volume that is needed. For example, the density of glycerol is 1.26 g/mL. Then, if 500 mL of glycerol is needed, 630 g should be weighed.
Explanation:
Density is the amount of mass per unit of volume. Density relates how many grams 1 milliliter of a substance weighs. Thus, if the density of glycerol is 1.26 g/mL means that 1.26 grams of glycerol occupy 1 mL of volume, or, in other words, 1 mL of glycerol weighs 1.26 grams.
Therefore, if 500 mL of glycerol is required to use for an experiment, 630 grams need to be weighed:
1 mL glycerol________ 1.26 g
500 mL glycerol______ x= 500mL * 1.26 g / 1 mL = 630 g
Answer:
A)
Explanation:
Hi,
A) First we need to calculate the heat consumed (because the temperature decreased) by the dissolution process.
All the heat consumed was shown in the change of temperature given that there is no heat loss in the calorimeter.
So:
We know that:
The heat is:
1 mol of the amonium nitrate weighs: 80g/mol:
The heat for 1 mol:
The precise fit on the ring stand. The ability to hold more substance than a test tube. A shallow bottom to increase the surface area of a liquid, leaving the solid behind.
If is an endothermic reaction.. heat is absorbed from the surrounding.. so it is Positive(+ve).. l hope it helped???