The only one that I can do without google is 47. Sorry that I can't answer the others. The answer to 47 is this: you know that the western side of the hill has the steepest slope because the ovals showing altitude are way closer together. The closer the circles/ovals are, the steeper the slope is.
Sorry if this doesn't help much, but I answered what I could without cheating.
Foxeslair
<u>Answer:</u> The molarity of NaCl solution is 0.0489 M
<u>Explanation:</u>
Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:
.....(1)
We are given:
Given mass of NaCl = 0.8 g
Molar mass of NaCl = 58.44 g/mol
Volume of the solution = 280 mL
Putting values in equation 1, we get:
![\text{Molarity of solution}=\frac{0.8\times 1000}{58.44\times 280}\\\\\text{Molarity of solution}=0.0489M](https://tex.z-dn.net/?f=%5Ctext%7BMolarity%20of%20solution%7D%3D%5Cfrac%7B0.8%5Ctimes%201000%7D%7B58.44%5Ctimes%20280%7D%5C%5C%5C%5C%5Ctext%7BMolarity%20of%20solution%7D%3D0.0489M)
Hence, the molarity of NaCl solution is 0.0489 M
Answer:
The reaction will proceed left to attain equilibrium.
Explanation:
Let´s consider the following reaction.
COCl₂(g)⇄CO(g)+Cl₂(g) Kc = 2.19 × 10⁻¹⁰
To determine whether it is at equilibrium or not, we have to calculate the reaction quotient (Q).
![Q=\frac{[CO].[Cl_{2}]}{[COCl_{2}]} =\frac{3.3 \times 10^{-6} \times 6.62 \times 10^{-6} }{2.00 \times 10^{-3}} =1.09 \times 10^{-8}](https://tex.z-dn.net/?f=Q%3D%5Cfrac%7B%5BCO%5D.%5BCl_%7B2%7D%5D%7D%7B%5BCOCl_%7B2%7D%5D%7D%20%3D%5Cfrac%7B3.3%20%5Ctimes%2010%5E%7B-6%7D%20%5Ctimes%206.62%20%5Ctimes%2010%5E%7B-6%7D%20%7D%7B2.00%20%5Ctimes%2010%5E%7B-3%7D%7D%20%3D1.09%20%5Ctimes%2010%5E%7B-8%7D)
Since Q > Kc, Q has to decrease its value to achieve equilibrium. To do so, it must decrease its numerator (products) and increase its denominator (reactants). All in all, the reaction will proceed left to attain equilibrium.
Answer:
Hi, I think it's C.
Explanation:
If I'm correct could you please mark me as brainliest? It would really help me. Paper clips can be attracted to each other without touching, but, they have to be separated only an amount of space.
Variables we know:
t = 8 seconds
Vi = 0 m/s
g = -9.81
Δy = ?
Vf = ?
Equation we will be using to solve for Vf: Vf = Vi + gt
Steps to solve:
Vf = (0) + (-9.81)(8)
Vf = -78.48 m/s
Hope this helps!! :)