33 - 15 = 18
This element is P-33
There are no zeros, so all three digits<span> are significant.</span>
<span>b. 3440.</span>
Answer:
5 cm³.
Explanation:
The following data were obtained from the question:
Volume of water = 35 mL
Volume of water + Rock = 40 mL
Volume of rock =.?
The volume of the rock can be obtained as follow:
Volume of rock = (Volume of water + Rock) – (Volume of water)
Volume of rock = 40 – 35
Volume of rock = 5 mL
Finally, we shall convert 5 mL to cm³. This can be obtained as illustrated below:
1 mL = 1 cm³
Therefore,
5 mL = 5 cm³
Thus, the volume of the rock is 5 cm³.
Answer:
C(s) + H2O(g) → CO(g) + H2(g)
Explanation:
Carbon monoxide and hydrogen. Possibly some reaction products from impurities in the coke, but mostly CO and H2.