Answer:
Option A
Explanation:
Addition of too much of solvent will make the solution dilute due to which the crystals will not form. Hence option D is incorrect
On the other hand adding a minimum amount of boiling solvent will give a saturated solution for recrystallization. Hence, option A is incorrect
Addition of cold solvent will lower the rate of formation of crystals. Hence, both option B and C are incorrect
Answer:The Law of Conservation of Mass simply states that the total amount of mass should not change in a chemical reaction that is isolated (no other objects can enter the reaction). The total mass of the reactants must be equal to the total mass of the products. Thus, the correct estimate of the amount of oxygen used in the interaction is the difference between 133 g and 29 g.
Explanation: I hope this helped!
Answer:
Explanation:
There's 2 steps: first find the volume then the mass
volume=lwh
convert 20 cm to mm: 20x10=200mm
volume=(170)(200)(0.99)
volume=33,660 mm
since the density is in cm cubed, convert 33,660 mm to cm
33,660/10=3366
density=mass/volume, rearrange to get mass=density x volume
mass=19.3 x 3366
mass=64963.8
Answer:B random mutations
Explanation: Because I took the test
D, T<span>he total mass of hydrochloric acid used is less than 10 grams.
Conservation of mass, matter cannot be created or destroyed.</span>
