Answer:
Subtracting the number of protons from the atomic mass.
H H
I I
H - C - C - H
l l
H H
A Carbon can only form 4 bonds and a Hydrogen can only form 1 bond.
I would say the C, the windward side, sense it is wetter. Hope this helps. :)
A. 599 mg x 1g/1000mg x 1mole/174.24g = 0.003438 moles
<span>b. 0.003438 moles x 1000 mmoles/mole = 3.438 moles </span>
<span>c. 0.003438 moles/0.741 L = 0.0046 M </span>
<span>d. [K+] = 2 x 0.0046 = 0.0092 M because each mole K2 SO4 yields 2 moles K+ </span>
<span>e. [SO42-] = 0.0046 M </span>
<span>f. 599 mg/0.741 L = 808.4 mg/L = 808 ppm </span>
<span>g. 0.599g/741 ml x 100 ml = 0.08 g/100 ml = 0.08% w/v </span>
<span>h. pK+ = -log [K+] = -log 0.0092 = 2.04 </span>
<span>i. pSO42- = -log [SO42-] = -log 0.0046 = 2.34</span>
Answer is: 0.5 dm³ to dissolve.
m(CuSO₄) = 11.2 g.
c(CuSO₄) = 0.140 mol/dm³,
V(CuSO₄) = ?
n(CuSO₄) = m(CuSO₄) ÷ M(CuSO₄).
n(CuSO₄) = 11.2 g ÷ 159.6 g/mol.
n(CuSO₄) = 0.07 mol.
V(CuSO₄) = n(CuSO₄) ÷ c(CuSO₄).
V(CuSO₄) = 0.07 mol ÷ 0.14 mol/dm³.
V(CuSO₄) = 0.5 dm³.
