Determine the number of moles of H in each sample.

1). 8.48 mole NH3

2).0.111 mole N2H4

3). 36.0 mole C10 H22

1) 25.44 moles H

2) 0.444 moles H

3) 792 moles H

Explanation:

Step 1: Number of moles H in 8.48 moles NH3

In 1 mol NH3 we have 3 moles H

For 8.48 moles NH3 we have 3*8.48 = 25.44 moles H

Step 2: Number of moles H in 0.111  moles N2H4

For 1 mol N2H4 we have 4 moles H

For 0.111 moles N2H4 we have 4*0.111 = 0.444 moles H

Step 3: Number of moles H in 36.0 moles C1OH22

For 1 mol C10H22 we have 22 moles of H

For 36.0 moles C1OH22 we have 22*36.0 = 792 moles H

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )