Fe2O3
That’s the formula for iron oxide
Answer:
Total volume is 625 mL
Explanation:
We use the 6 % (m/v) data which is a sort of concentration. This percent means that the solution has 6 g of solute in 100 mL of solution
So we make a rule of three:
6 g of solute (NaCl) are in 100 mL of solution
Therefore, 37.5 g are in (37.5 .100) / 6 = 625 mL
Answer:
4 m/s
Explanation:
Step 1: Given data
- Mass of the balloon (m): 400 kg
- Kinetic energy of the balloon (KE): 3200 J
Step 2: Calculate the velocity (v) of the balloon
The kinetic energy is the energy that the balloon has due to its movement. We can calculate the velocity of the balloon using the following expression.
v = √(2 × KE/m)
v = √(2 × 3200 J/400 kg) = 4 m/s
I hope this helps you alot and to my understanding:)
328 % means 0.328 g of KCN in 100 g of solution
0.328 g of KCN ---------> 100 g of solution
1120 * 10^-3 g of KCN ------> (100 / 0.328) * 1120 * 10^-3
= 341 g of solution