Answer:
a. Alkene
b. Alkyne
c. Alkane
d. Alkyne
Explanation:
Hydrocarbons can be:
- Alkanes: all single bonds. Have the general formula CₙH₂ₙ₊₂.
- Alkenes: have a double bond. Have the general formula CₙH₂ₙ.
- Alkynes: have a triple bond. Have the formula CₙH₂ₙ₋₂.
a. C₈H₁₆
Alkene. n = 8 and 2n = 2.8 = 16,
b. C₄H₆
Alkyne. n = 4 and 2n-2 = 2.4-2 = 6.
c. C₇H₁₆
Alkane. n = 7 and 2n+2 = 2.7+2 = 16.
d. C₂H₂
Alkyne. n = 2 and 2n-2 = 2.2-2 = 2.
Answer: 778 ml
Explanation:
To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
Putting values in above equation, we get:
Thus volume the gas occupy at 30.0°C is 778 ml
<span>Oxidation or reaction with oxygen is a chemical property</span>
Answer:
is A tide in which the difference between high and low tide is the least. Neap tides occur twice a month when the Sun and Moon are at right angles to the Earth. When this is the case, their total gravitational pull on the Earth's water is weakened because it comes from two different directions.
Explanation:
<u>Given</u>:
Wavelength (λ) of the laser pulse = 545 nm = 5.45 * 10⁻⁹ m
Total energy of pulse = 4.85 mJ
<u>To determine:</u>
The number of photons in the laser of a given energy
<u>Explanation:</u>
Energy per photon (E) = hc/λ
where h = planck's constant = 6.626 *10⁻³⁴ Js
C = speed of light = 3*10⁸ m/s
λ = wavelength
E = 6.626 *10⁻³⁴ Js* 3*10⁸ms-1 /5.45 * 10⁻⁹ m = 3.65 * 10⁻¹⁹ J
Now,
# photons = total energy/Energy per photon
= 4.85 * 10⁻³ J* 1 photon / 3.65 * 10⁻¹⁹ J = 1.32 * 10¹⁶ photons
Ans: the laser pulse contains 1.32 * 10¹⁶ photons