Answer:
Cl
Explanation:
n for Mg=m:Mm
=65.8:24
=2.74mol
n for Cl=m:Mm
=45.7:70
=0.65mol
According to the <em>number of moles</em> we can say that the limiting reagent is Cl as it has few moles.
I believe it's based on the atom of hydrogen.
The balanced equation for the above reaction is as follows;
Na₂SO₄ + BaCl₂ --> BaSO₄ + 2NaCl
Na₂SO₄ reacts with BaCl₂ in the molar ratio 1:1
Number of Na₂SO₄ moles - 10.0 g / 142.1 g/mol = 0.0704 mol
Number of BaCl₂ moles - 10.0 g / 208.2 g/mol = 0.0480 mol
this means that 0.0480 mol of each reactant is used up, BaCl₂ is the limiting reactant and Na₂SO₄ has been provided in excess.
stoichiometry of BaCl₂ to BaSO₄ is 1:1
number of BaSO₄ moles formed - 0.0480 mol
Mass of BaSO₄ - 0.0480 mol x 233.2 g/mol = 11.2 g
theoretical yield is 11.2 g but the actual yield is 12.0 g
the actual product maybe more than the theoretical yield of the product as the measured mass of the actual yield might contain impurities.
percent yield - 12.0 g/ 11.2 g x 100% = 107%
this is due to impurities present in the product or product could be wet.
Answer:
The answer to your question is below
Explanation:
Sodium hydroxide (NaOH): 39 g/mol
Na = 23 O = 16 H =1 MM = 23 + 15 + 1 = 39
Water (H2O): 18 g/mol
H =1 O = 16 MM = 1 x 2 + 16 = 2 + 15 = 18
Glucose (C6H12O6): 180 g/mol
C = 12 H = 1 O = 16 MM = 12 x 6 + 12 x 1 + 16 x 6 = 72 + 12 + 96 = 180
Calcium sulfate (CaSO4): 136 g/mol
Ca = 40 S = 32 O = 16 MM = 40 + 32 + 16x4 = 40 + 32 + 64 = 136
Magnesium phosphate (Mg3(PO4)2): 264 g/mol
Mg = 24 P = 31 O = 16 MM = 24 x 3 + 31x2 + 16 x 8 = 72 + 64
+ 128 = 264
Answer:
The DNA region is not easily accesible.
Explanation: