Answer:
D.
Explanation:
The hypothesis was that speed would increase with the addition of mass from passengers. The data shows that when passengers/mass are added, speed decreases.
Answer:
<u><em></em></u>
- <u><em>pOH = 0.36</em></u>
Explanation:
Both <em>potassium hydroxide</em> and <em>lithium hydroxide </em>solutions are strong bases, so you assume 100% dissociation.
<u>1. Potassium hydroxide solution, KOH</u>
- Volume, V = 304 mL = 0.304 liter
- number of moles, n = M × V = 0.36M × 0.304 liter = 0.10944 mol
- 1 mole of KOH produces 1 mol of OH⁻ ion, thus the number of moles of OH⁻ is 0.10944
<u>2. LIthium hydroxide, LiOH</u>
- Volume, V = 341 mL = 0.341 liter
- number of moles, n = M × V = 0.341 liter × 0.51 M = 0.17391 mol
- 1mole of LiOH produces 1 mol of OH⁻ ion, thus the number of moles of OH⁻ is 0.17391
<u />
<u>3. Resulting solution</u>
- Number of moles of OH⁻ ions = 0.10944 mol + 0.17391 mol = 0.28335 mol
- Volume of solution = 0.304 liter + 0.341 liter = 0.645 liter
- Molar concentration = 0.28335 mol / 0.645 liter = 0.4393 M
<u />
<u>4. </u><em><u>pOH</u></em>
![pOH=-\log [OH^-]=-\log (0.439)=0.36](https://tex.z-dn.net/?f=pOH%3D-%5Clog%20%5BOH%5E-%5D%3D-%5Clog%20%280.439%29%3D0.36)
← answer
Following are the types of chemical reactions with a brief overview:
<span>1) Combination (Two elements combine to form a compound)
2) Decomposition (A compound is broken into elements)
3) Single displacement (An element displaces an element present in a compound)
4) Double displacement (The elements of two compounds displace each other)
5) Combustion (Burning Takes places)
<span>6) Redox (Oxidation Reduction Reaction)
If you see the given equation, Al is displacing Ni in the compound NiSO4 and taking its place. Ni is set free as a separate element. So this type of reaction is known as Single Displacement Reaction.</span></span>
Answer:
correct option: 1
Explanation:
As given in the question that gas are taken from one sate to another state through different paths and asking which quantity will always remains same.
1. internal energy of gas is not path dependent so internal energy will remains same it depend only on the initial and final point .
2. Heat and work are path dependent means its matter the gas is taken by which path. so option 2 and 3 are wrong.
M = n / V
M = 0.5 / 0.05
M = 10 mol/L-1
Hope this helps!
