Answer:
1.51 × 10⁶ kJ
General Formulas and Concepts:
<u>Stoichiometry</u>
- Using Dimensional Analysis
<u>Thermochemistry</u>
Specific Heat Formula: q = mcΔT
- <em>q</em> is heat (in J)
- <em>m</em> is mass (in g)
- <em>c</em> is specific heat formula (in J/g °C)
- <em>ΔT</em> is change in temperature (in °C)
Explanation:
<u>Step 1: Define</u>
[Given] m = 114.32 g
[Given] c = 4186 J/kg °C
[Given] ΔT = 18.0 °C - 14.85 °C = 3.15 °C
[Solve] <em>q</em>
<em />
<u>Step 2: Convert Pt. 1</u>
1 kg = 1000 g
<u>Step 3: Solve</u>
- Substitute in variables [Specific Heat Formula]: q = (114.32 g)(418600 J/g °C)(3.15 °C)
- Multiply: q = (4.78544 × 10⁸ J/°C)(3.15 °C)
- Multiply: q = 1.50741 × 10⁹ J
<u>Step 4: Convert Pt. 2</u>
1000 J = 1 kJ
<u>Step 5: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs as our lowest.</em>
1.50741 × 10⁶ kJ ≈ 1.51 × 10⁶ kJ
Answer:
The kinetic energy would also be increased by 138 times.
Explanation:
Rest mass of an electron
Convert to MeV
Total energy of the electron = 138×mc² =70.518 MeV
Kinetic energy of an electron
E = mc²
According to the question
E = 138×0.511 MeV = 70.518 MeV
So, the kinetic energy would also be increased by 138 times.
There are no "following" parts of the ear listed.
Sound waves are changed into a signal the brain can understand, consisting of nerve impulses, in the "hair cells" in the lining of the cochlea ... that spiral thing deep in the inner ear.
(In fact, that's as deep as you can get in the inner ear, because it's literally the end of the ear. After those hair cells inside the spiral cochlea, there's no more ear. The sound has now changed to electrical signals that go from there to the brain, in the form of electrical currents flowing in nerves.)
Explanation :
Corrosion is the process of conversion of metal into its oxides, hydroxides and sulfides.
Rusting of iron is the process of corrosion in metals. Iron objects react with oxygen in the air and turned reddish. This reddish covering is Rust.
where, is iron
is oxygen present in atmosphere
and is rust or Ferric oxide.
In the given equation, and both are reactants and is a product.