Acoffee-cup calorimeter is used to determine the heat of reaction for the reaction of compound a with compound b. a(aq) + b(aq) → c(aq) when we add 16.10 ml of 0.189 m a at 23.722°c to 16.10 ml of 0.189 m b already in the calorimeter at the same temperature, the resulting temperature is observed to be 33.637°c. the heat capacity of the calorimeter has previously been determined to be 30.7 j/°c. assume that the specific heat of the mixture is the same as that of water, 4.184 j/g·°c, and that the density of the mixture is 1.00 g/ml. how much heat, in joules, was released by the reaction? (here we're looking for the magnitude of the heat. your answer should be positive.)

.

Explanation:

Assume that his calorimeter is sufficiently effective, such that no heat had escaped to the surroundings. Heat from this solution would be absorbed by either

Temperature change: .

Only the specific heat capacity (per unit mass) of the solution is given. Both the mass of the solution and the temperature change will be required for determining the energy change. Start by finding the mass of the solution.

.

Calculate the amount of heat absorbed from the specific heat:

.

The heat capacity of the coffee cup is given. Only the temperature change will be required for finding the amount of heat absorbed.

.

Find the sum of the two parts of heat. Round to three significant figures as in the heat capacity of the coffee cup and the density of the solution.

.

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.