1. pesticides: that are sprayed on crops and flowers
2. global warming: warm winters have caused plants to shift their schedules. when the honey bees come out of hibernation, the flowers they need to feed on have already bloomed and died
3. pathogens carried by mites weaken bees
Answer:
c
Explanation:
three or more atoms make up one compound
Answer:
This solvent is not suitable because ΔS°vap > 0.
Explanation:
Let's consider a system at a higher temperature T1, and its surroundings at a lower temperature T2. Let's call q the heat that goes irreversible from the system to the surroundings:
ΔSsystem = -q/T1 (it's losing heat, so q must be negative)
ΔSsurroundings= q/T2
ΔSprocess = ΔSsystem + ΔSsurroundings
ΔSprocess = -q/T1 + q/T2
ΔSprocess = q*(1/T2 - 1/T1)
ΔSprocess = q*[(T1 - T2)/(T1*T2)]
As pointed above, T1> T2, so ΔSprocess > 0 and because of that, the reaction is spontaneous. It means that if ΔS°vap > 0, the solvent will vaporize. So, as we can notice, the solvent given is not suitable.
Answer:
150
Explanation:
- C₄H₂OH + 6O2 → 4CO2 + 5H₂O
We can <u>find the equivalent number of O₂ molecules for 100 molecules of CO₂</u> using a <em>conversion factor containing the stoichiometric coefficients of the balanced reaction</em>, as follows:
- 100 molecules CO₂ * = 150 molecules O₂
150 molecules of O₂ would produce 100 molecules of CO₂.