A and D
They are sometimes proven wrong and contradicted, so these would make the most sense
Answer: Marcia made a more concentrated salt solution.
Explanation:
Marcia used 1 kg of salt, which the exercise tells us is 2.2 lb.
She dissolved it in 3L of water, so we have to find out how much that is in pints. We do that using cross multiplication.
If 1L equals 2.11 pints, then
xpints / 3L = 2.11pints / 1L, so
xpints = (3L . 2.11pints) / 1L = 6.33 pints
Now we know she dissolved 2.2lb in 6.33 pints of water. We use cross multiplication again to find out how much salt she would have in 10 pints, so we can know how concentrated it is compared to Bobby's solution, which is 10 pints.
xlb / 10pints = 2.2lb / 6.33pints
xlb = (10pints . 2.2lb) / 6.33pints = 3.47lb
So Marcia has a concentration of 3.47lb per 10 pints, whereas Bobby only has 3lb per 10 pints.
Explanation:
Let us assume that volumes is equal to spheres volume of nucleus.
fm = femto meter = 
pm = pico meter = 
Hence, calculate the volume as follows.
V = 
= 
= 82.4481 
(cubic femtometers)
or, = 82
Now, we will calculate the volume of the atom as follows.
V =
= 
= 1436758.4 
(cubic picometers)
thus, we can conclude that volume of the nucleus is 82 and volume of the atom is 1436758.4 .
I think c I’m not positive about the question but I think c
