A balloon initially has a volume of 45 L at sea level, where temperature is 25∘C and the pressure is 1.0 atm. It rises to an elevation of 2.0 km, where the temperature is 5.0∘C and the pressure is 0.78 atm. What is the balloon's volume at this height?

53.8 L

Step-by-step explanation:

We can use the ideal gas formula that relates pressure, volume and temperature:

where P1 = initial pressure = 1.0 atm

V1 = initial volume = 45 L

T1 = initial temperature = 25°C = 25 + 273 = 298 K

P2 = final pressure = 0.78 atm

V2 = final volume

T2 = final temperature = 5.0°C = 5 + 273 = 278 K

Therefore, the final volume will be:

Its volume is 53.8 L

c = 0.429t

step-by-step explanation:

the constant rate at which carlos harvests cassava is 35 minutes per 15 cassavas 15/35 = 0.429 cassava per minute

therefore, an equation that models the number of cassava (c) that harvest carlos in a time (t) is the following:

where t is the time in minutes.

this means that when 35 minutes have elapsed 15 cassava have been harvested, at 70 minutes 30 cassava have been harvested and so on.