Initial dimension of the pool:
Length (L)= 50.0 m
Width (W)= 25.0 m
Depth (D) = 2.0 m
Initial Volume of the pool (V1) = L*W*D = 50.0 * 25.0 *2.0 = 2500 m3
When the depth is lowered by 3 cm i.e. 0.03 m, the new depth becomes: 2.0 - 0.03 = 1.97 m
The new volume of the pool (V2) = 50.0*25.0*1.97 = 2462.5 m3
Volume of water to be pumped out = V1-V2 = 2500-2462.5 = 35.5 m3
Now, 1 m3 = 1000 L
therefore, 35.5 m3 == 35.5 *10^3 L
It is given that:
3.80 L of water is pumped out in 1 sec
Therefore, 35.5*10^3 L will be pumped out in:
= 1 s * 35.5*10^3 L/3.80 L = 9.34*10^3 sec
Answer:
Na (Sodium)
Explanation:
Sodium is a metal, and when combined with Chlorine (which is a non-metal) it creates an ionic compound
PO4 anion has a 3- charge.A sodium cation , has a 1+ charge.Now , you have to think how many Na ions you need to fully neutralize the PO4 's 3- charge. Answer 3. That's because a molecule must have a neutral charge (a 0 charge). 3+(-3)=0.So , sodium phosphate has the formula Na3PO4.
Answer:
Gallium, Phosphorus, Chlorine, Fluorine
Explanation:
Arrange the elements in order of increasing ionization energy. Use the periodic table to identify their positions on the table.
Drag each tile to the correct box.
Tiles
chlorinefluorinegalliumphosphorus
Sequence
