- Area of shaded region = 2571.66 in²
Radius of smaller circle = 25 in
Radius of larger circle = 25 + 13 = 38 in
Area of ring : Area of larger circle - Area of smaller circle
Answer:
a,c, e
Step-by-step explanation:
Answer:
The total cost is 1.25 dollars.
Step-by-step explanation:
The reaction between HCl and CaCO₃ is giving by:
2HCl(aq) + CaCO₃(s) → CaCl₂(aq) + CO₂(g) + H₂O(l) (1)
0.500L M: 100.01g/mol
0.400M
According to equation (1), 2 moles of HCl react with 1 mol of CaCO₃, so to neutralize HCl, we need the next amount of CaCO₃:
The CaCO₃ mass of each tablet is:
Hence, the number of tablets that we need to neutralize the HCl is:
Finally, if every 80 tablets costs 4.00 dollars, 25 tablets will cost:
<u>So, the total cost to neutralize the HCl is 1.25 dollars.</u>
I hope it helps you!
Answer:
MN=25
Step-by-step explanation:
mn=(ab+cd)/2 --> mn=(40+10)/2 --> mn=50/2 --> mn =25
(this is half an answer and this is what i could get)
Answer:
dont mind me just grinding for points
Step-by-step explanation: