Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. what percent (by moles) of he is present in a helium-oxygen mixture having a density of 0.518 g/l at 25 ∘ c and 721 mmhg ?

a person with a mass of 106kg has a weight of 1060n

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//