The answer is D. I hope this helps
Answer:
The density of gold is of 18 grams per cm3.
Explanation:
The mass density of a homogeneous material expresses how much mass of that material is present in a given volume. Since the density of an object is obtained by dividing its mass by its volume, to obtain the density of gold, its 90 grams of mass must be divided by its 5 cm3 volume, performing the following calculation:
90/5 = X
18 = X
Thus, the density of gold is 18 grams per cm3.
Answer:162.516 gm
Explanation:
Given
Quartz contains 46.7 % silicon by mass
i.e.Silicon is 46.7 % by mass
Total mass of Quartz m=348 gm
46.7% of 348 gm
Because cool air rises and warm air falls, so if you wanted the cooler air, you would need to go to higher elevation
