Answer:
NH₄⁺
H₂PO₄⁻
H₃O⁺
Explanation:
- An ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
- Ion may be positively charged "cation" or negatively charged "anion".
- Neutral molecule has a net charge of zero.
<em>So, the species that are ions are: </em>
NH₄⁺
H₂PO₄⁻
H₃O⁺
Answer:
a) First-order.
b) 0.013 min⁻¹
c) 53.3 min.
d) 0.0142M
Explanation:
Hello,
In this case, on the attached document, we can notice the corresponding plot for each possible order of reaction. Thus, we should remember that in zeroth-order we plot the concentration of the reactant (SO2Cl2 ) versus the time, in first-order the natural logarithm of the concentration of the reactant (SO2Cl2 ) versus the time and in second-order reactions the inverse of the concentration of the reactant (SO2Cl2 ) versus the time.
a) In such a way, we realize the best fit is exhibited by the first-order model which shows a straight line (R=1) which has a slope of -0.0013 and an intercept of -2.3025 (natural logarithm of 0.1 which corresponds to the initial concentration). Therefore, the reaction has a first-order kinetics.
b) Since the slope is -0.0013 (take two random values), the rate constant is 0.013 min⁻¹:
![m=\frac{ln(0.0768)-ln(0.0876)}{200min-100min} =-0.0013min^{-1}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7Bln%280.0768%29-ln%280.0876%29%7D%7B200min-100min%7D%20%3D-0.0013min%5E%7B-1%7D)
c) Half life for first-order kinetics is computed by:
![t_{1/2}=\frac{ln(2)}{k}=\frac{ln(2)}{0.013min^{-1}} =53.3min](https://tex.z-dn.net/?f=t_%7B1%2F2%7D%3D%5Cfrac%7Bln%282%29%7D%7Bk%7D%3D%5Cfrac%7Bln%282%29%7D%7B0.013min%5E%7B-1%7D%7D%20%20%3D53.3min)
d) Here, we compute the concentration via the integrated rate law once 1500 minutes have passed:
![C=C_0exp(-kt)=0.1Mexp(-0.013min^{-1}*1500min)\\\\C=0.0142M](https://tex.z-dn.net/?f=C%3DC_0exp%28-kt%29%3D0.1Mexp%28-0.013min%5E%7B-1%7D%2A1500min%29%5C%5C%5C%5CC%3D0.0142M)
Best regards.
Answer: I believe it's 8
Explanation: The oxygen atom has therefore 8 neutrons, 8 protons and 8 electrons.
Answer:
V
Explanation:
Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy). When the cause of the convection is unspecified, convection due to the effects of thermal expansion and buoyancy can be assumed. Convection may also take place in soft solids or mixtures where particles can flow.