Answer:
Explanation:
10.11 g sample of 
contains 22.34% 
by mass
According to the law of constant composition the if one sample of has 22.34% of by mass then any other sample of will have the same percentage of the amount of .
For a sample of 7.09 g we have
The mass of sodium in the required sample is .
Answer:
D
Explanation:
Transport proteins carry substances throughout your bloodstream — into cells, out of cells or within cells. The substances transported by these proteins include nutrients like vitamins or minerals, blood sugar, cholesterol and oxygen.
(a) 37Q = 37Rb(Rubidium)
35R = 35Br(Bromine)
Formula of the compound is : RbBr(Rubidium Bromide)
(b) 8Q = 8O(Oxygen)
13R = 13Al(Aluminum)
Formula of the compound is : Al2O3(Aluminum Oxide)
(c)20Q = 20Ca(Calcium)
53R = 53I(Iodine)
Formula of the compound is : CaI2(Calcium Iodide)
Answer:
The answer is D
Explanation:
All the other options are associated with chemical change
Answer:
You not alone lolI'm also tryna figure out the answer
