Answer:
179.4 g of oyxgen will be produced.
Option 2.
Be careful because the units says L instead of g
Explanation:
Decomposition reaction:
2KClO₃ → 2KCl + 3O₂
2 moles of chlorate can decompose to 2 moles of chloride and 3 moles of oxygen.
We convert the mass to moles, and then we make the rule of three:
458 g / 122.55 g/mol =3.74 moles of chlorate
2 moles of chlorate can produce 3 moles of oxygen
Then, 3.74 moles of chlorate may produce (3.74 .3) / 2 = 5.60 moles of O₂
We convert the moles to mass → 5.60 mol . 32 g / 1mol = 179.4 g
Answer:
The color black absorbs most colors, while white reflects most colors.
M(NaCl)=1.0 g
w=0.035
p=1.02 g/mL
v-?
m(NaCl)=mw
m=vp
m(NaCl)=vpw
v=m(NaCl)/(pw)
v=1.0/(1.02·0.035)=28.0 mL
Answer:
The correct answer is option D, Sb
Explanation:
Atomic radius of As = 185 pm
Atomic radius of N = 155 pm
Atomic radius of P = 195 pm
Atomic radius of Sb = 206 pm
If we arrange the following element on the basis of their atomic radius in the increasing order , we will get the following
N (155 pm) < As (185 pm) < P (195 pm) < Sb (206 pm)
Thus among all the given element Sb has the largest atomic radius