Answer:
162
Step-by-step explanation:
7(3×6-4)+4^3
7(18-4)+4^3
7×14+4^3
98+64
162
Answer:
steps below
Step-by-step explanation:
3 + 6b + 3b² = 3 (b² + 2b + 1) = 3 (b + 1)²
root: -1 if 3 + 6b + 3b² = 0 b = -1
We shall need the following equalities :
<span>moles = mass / Molar mass</span>
1 mol NaCl = 58.4428 g NaCl
1 mol Cl2 = 2 mol NaCl
therefore
1 mol NaCl ---------------------------- > 58.4428 g NaCl
X--------------------------------------------- > <span>250 g NaCl
x=250/58.4428=4.2776869 mol NaCl
</span>1 mol Cl2 -----------------------> 2 mol NaCl
X------------------------------- > 4.2776869 mol NaCl
x=4.2776869/2=2.14 mol Cl2
the answer is 2.14 mol Cl2
Answer
A, B, C, D, E, F.
Step-by-step explanation:
In all of these shapes, the description applies to all except the trapezoid.