Answer:
C.
Explanation:
Gas molecules are diatomic which means it usually comes in 2.
So, H2(g)+O2(g) is H2O (l)
The first one is OH(hydroxide, not water)
Second one is not gas(not diatomic)
Answer is C.
Red blood cells. Need glucose oxygen to convert to carbon dioxide
Answer:
imp not sure but i think the density is 5
Explanation:
im probably wrong but i think this because the water rose to the 50 ml mark when before it was 45 then again i am only in 8th grade but it makes sense to me
A 0.250 L solution of NH4Cl contains (0.250 L)(0.35 mol/L) = 0.0875 moles of dissolved NH4Cl. Converting this quantity to mass, we get (0.0875 mol NH4Cl)(53.491 g/mol) = 4.7 g NH4Cl (two significant figures).
So, approximately 4.7 g of NH4Cl dissolved in a 0.250 L solution will have a concentration of 0.35 L.