Answer:
Mass of sample is 99.9 g, density of ample is 11.35
and temperature of sample is 
Explanation:
Mass is an additive property. Therefore mass of combined sample is summation of masses of two pellets.
Mass of combined sample = (37.2+62.7) g = 99.9 g
Density is an intensive property. Therefore density of combined sample of lead will be same as with density of Pb.
Density of combined sample = 11.35 
Temperature is an intensive property. Therefore temperature of combined sample of lead will be same as with individual pellets.
temperature of combined sample = 
D. Should be correct- the other ones don’t make sense
Answer:
In pair NaF and H2O both compounds exibit predominantly ionic bonding.
Explanation:
The steps involved in formation of a sedimentary rock are placed in the correct order as follows.
Step 1: The sediment is deposited by wind, flowing water, or other natural processes.
Step 2: The sediment is gradually buried and compacted.
Step 3: Dissolved minerals completely cement the sediment together.
As a result, it leads to the formation of a sedimentary rock.
IDensity is calculated by mass divided by volume. As you half the Hershey bar, mass and volume change by the same proportion. Therefore, density is the same.