The answer is D) The boy uses force to move the rock a distance
Answer:
Please find the solution in the attached file.
Explanation:
Data:
M (molarity) = ? (M or Mol/L)
m (mass) = 13.50 g
V (volume) = 250 mL → 0.25 L
MM (Molar Mass) of Lead(IV) Nitrate
![Pb(NO_3)_4](https://tex.z-dn.net/?f=Pb%28NO_3%29_4)
Pb = 1*207 = 207 amu
N = (1*14)*4 = 14*4 = 56 amu
O = (3*16)*4 = 48*4 = 192 amu
------------------------------------
MM of
![Pb(NO_3)_4](https://tex.z-dn.net/?f=Pb%28NO_3%29_4)
= 207+56+192 = 455 g/mol
Formula:
![M = \frac{m}{MM*V}](https://tex.z-dn.net/?f=M%20%3D%20%20%5Cfrac%7Bm%7D%7BMM%2AV%7D%20)
Solving:
![M = \frac{m}{MM*V}](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7Bm%7D%7BMM%2AV%7D%20)
![M = \frac{13.50}{455*0.25}](https://tex.z-dn.net/?f=M%20%3D%20%20%5Cfrac%7B13.50%7D%7B455%2A0.25%7D%20)
![M = \frac{13.50}{113.75}](https://tex.z-dn.net/?f=M%20%3D%20%20%5Cfrac%7B13.50%7D%7B113.75%7D%20)
![M = 0.118681318...\:\:\to\:\:\boxed{\boxed{M \approx 0.119\:Mol/L}}\end{array}}\qquad\quad\checkmark](https://tex.z-dn.net/?f=M%20%3D%200.118681318...%5C%3A%5C%3A%5Cto%5C%3A%5C%3A%5Cboxed%7B%5Cboxed%7BM%20%5Capprox%200.119%5C%3AMol%2FL%7D%7D%5Cend%7Barray%7D%7D%5Cqquad%5Cquad%5Ccheckmark)
Answer:
<span>
B. 0.119 M</span>
Answer:
They were less influenced by the Sun and Gravitational interference of many smaller planets.
Explanation:
Answer:
48.32 g of anhydrous MnSO4.
Explanation:
Equation of dehydration reaction:
MnSO4 •4H2O --> MnSO4 + 4H2O
Molar mass = 55 + 32 + (4*16) + 4((1*2) + 16)
= 223 g/mol
Mass of MnSO4 • 4H2O = 71.6 g
Number of moles = mass/molar mass
= 71.6/223
= 0.32 mol.
By stoichiometry, since 1 mole of MnSO4 •4H2O is dehydrated to give 1 mole of anhydrous MnSO4
Number of moles of MnSO4 = 0.32 mol.
Molar mass = 55 + 32 + (4*16)
= 151 g/mol.
Mass = 151 * 0.32
= 48.32 g of anhydrous MnSO4.