Answer: a.) Methyl would be the answer.
Explanation:
Answer:
1. 2090 J
2. 113,000J
3. 33,900J
4. -209.2 J
5. 2g
Explanation:
Note: specific heat capacity of water is 4.184 J/g°C.
1. The amount of heat can be calculated using the formula:
Q = m × c × ∆T
Q = 25 × 4.184 × (30 - 10)
Q = 104.6 × 20
Q = 2092 J
Q = 2090 J (nearest tens)
2. This question can be solved using the latent heat of vaporization of water. The latent heat of vaporization of a substance is the amount of heat required to convert a unit gram of a liquid into vapor without a change in temperature. The latent heat of vaporization of water per gram is:
2257 J/g
For 50grams of water, amount of heat that will be required will be: 50 × 2260
= 113,000J
3. For 15g of water, the amount of heat will be 15 × 2260 (latent heat of vaporization)
= 33,900J
4. Q = m × c × ∆T
Q = 5 × 4.184 × (40 - 50)
Q = 20.92 × (-10)
Q = -209.2 J
5. Q = m × c × ∆T
84 = m × 4.184 × (35 - 25)
84 = m × 4.184 × 10
84 = 41.84m
m = 84/41.84
m = 2.0076
m = 2g
Coal produces more pollution than any other energy source
Answer:
For a fixed mass of gas at constant pressure, the volume is directly proportional to the kelvin temperature. That means, for example, that if you double the kelvin temperature from, say to 300 K to 600 K, at constant pressure, the volume of a fixed mass of the gas will double as well.
Replacement of methyl groups of camphor is a reduction mechanism. Camphor is a bridged bi-cyclic compound. If you observe the structure of camphor the methyl group is placed with one carbon bridge (7, 7) and two carbon bridge (1). Attack from face of one carbon bridge is termed as exo attack whereas from face of two carbon bridge is termed as endo attack. So replacement will lead to mix of both and formation of two stereo isomers.
Reduction mechanism is often shown with a U-shaped arrow pointing the attack by ion such as in nucleophilic addition reaction.
