Because the iron in the sand gives the sand a different weight than needed. a lot of people either just need the iron or the sand when mixed it gives the wrong outcome of what was needed.
Given;
no. of moles (n) = 500 moles
volume (V) = 1.2 l
temperature (T) = 150°C = (150 + 273 )k = 423 k
gas constant (R) = 0.0821 L- atm / mole-K
then,
PV = nRT
P × 1.2 = 500 × 0.0821 × 423
P = 14,470.125 atm
But I guess pressure is too high. Well this should be the way.
Answer:
Group 7A
Explanation:
The group 7A elements consists of the most reactive non-metals on the periodic table.
This group is known as the group of halogens. They consist of element fluorine, chlorine, bromine, iodine and astatine.
- The elements in this group have the highest electronegativity values.
- They have 7 valence electrons and requires just one electron to complete their octets.
- This way, they are highly reactive in their search for that single electron.
Answer:
2
Explanation:
The sample has halved twice.
1/2 of 1/2 is 1/4, and 1/2 of 1 is 1/2.
Surface current are caused by : D. Wind Forces.
I Hope I Helped. c;