To begin the experiment, 1.5g of methane ch4 is burned in a bomb calorimeter containing 1,000 grams of water. the initial temperature of water is 25°c. the specific heat of water is 4.184 j/g°c. the heat capacity of the calorimeter is 695 j/°c . after the reaction the final temperature of the water is 37°c. using the formula qcal =ccal • δt, calculate the heat absorbed by the calorimeter. show work.

The calorimeter absorbs 8.3 kJ.

Step-by-step explanation:

The formula for the heat q absorbed by the calorimeter is

q = CcalΔT

Data:

Ccal = 695 J/°C

T₁ = 25 °C; T₂ = 37 °C

Calculations:

ΔT = T₂ - T₁

ΔT = 37 - 25

ΔT = 12 °C

q = 695 × 12  

q = 8300 J

q = 8.3 kJ

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.