1.velocity-displacement. The first two equations of motioneach describe one kinematic variable as a function of time. ... Velocity is directly proportional to time when acceleration is constant (v ∝ t). Displacement is proportional to time squared when acceleration is constant (s ∝ t2).
Answer:
Volume of the calcium hydroxide solution used is 0.0235 mL.
Explanation:
Moles of KHP =
According to reaction, 2 moles of KHP with 1 mole of calcium hydroxide , then 0.0330 moles of KHP will recat with ;
of calcium hydroxide
Molarity of the calcium hydroxide solution = 0.703 M
Volume of calcium hydroxide solution = V
Volume of the calcium hydroxide solution used is 0.0235 mL.
2H₂ + O₂ -------> 2H₂O
mole of H₂ =
=
= 0.7 mol
mole ratio of H₂ : H₂O
= 1 : 1
∴ if mole of H₂O = 0.7 mol
then mole of water = 0.7 mol
Thus:
mass of water = mole x Mr
= 0.7 mol x ((2 x 1) + (1 x 16))
= 12.6 g of water vapour
Answer:
Cis and trans isomers
Explanation:
Existence of double bond in carbon rich compound confirms the presence of geometrical isomer in the compound. The compound showing geometrical isomer exists as cis and trans isomers.
Substituents or functional group around double bond decides that the compound will be cis or trans.
If functional group or bigger substituents are present on the same side of the double bond, the compound will be cis.
If functional group or bigger substituents are present on the opposite of the double bond, the compound will be trans.
Answer:
pH - 3.41 = acidic
pH = 10.25 = basic
pH = 7.00 = neutral
[H+] -3.5 x 10-5 = acidic
[H+] - 6.7 x 10-9 = basic
[OH-]-5.8 x 10-4 = basic
[H0] -1.0 x 10-7 = neutral
[OH-] - 4.5 x 10-13 = acidic
Explanation:
Let us note that from the pH scale, a pH of;
0 - 6.9 is acidic
7 is neutral
8 - 14 is basic
But pH= - log [H^+]
pOH = -log [OH^-]
Then;
pH + pOH = 14
Hence;
pH = 14 - pOH
For [H+] -3.5 x 10-5
pH = 4.46 hence it is acidic
For [H+] - 6.7 x 10-9
pH = 8.17 hence it is basic
[OH-]-5.8 x 10-4
pH= 10.76 hence it is basic
[H0] -1.0 x 10-7
pH = 7 hence it is neutral
[OH-] - 4.5 x 10-13
pH = 1.65 hence it is acidic