Question

Брусок массой 500г при температуре 18 градусов по цельсии опускают в кипяток массой 400г. Из какого металла может быть сделан брусок, если вода в калориметре понизилась до 83 градусов по цельсию?

Answer 1

Сколько отдаст вода, столько получит брусок 
св*mв*(t2-t1) = cм*mм(t2-t3) 
t3=18 находим удельную теплоемкость металла и смотрим в таблице .

Answer 2

Determining the Metal of the Block

To determine the metal of the block, we can use the principle of heat transfer. The heat gained by the water in the calorimeter is equal to the heat lost by the block. We can calculate the heat gained by the water using the formula:

Q = m * c * ΔT

Where: - Q is the heat gained by the water - m is the mass of the water - c is the specific heat capacity of water - ΔT is the change in temperature of the water

In this case, the mass of the water is 400g and the change in temperature is 18°C - 83°C = -65°C (since the temperature decreased). The specific heat capacity of water is approximately 4.18 J/g°C.

Substituting the values into the formula, we get:

Q = 400g * 4.18 J/g°C * (-65°C)

Calculating this, we find that the heat gained by the water is approximately -108,680 J.

Now, we can calculate the heat lost by the block using the same formula. The mass of the block is 500g, and we need to determine the specific heat capacity of the metal.

Let's assume the specific heat capacity of the metal is c_m. The change in temperature of the metal can be calculated using the formula:

ΔT_m = Q / (m_m * c_m)

Where: - ΔT_m is the change in temperature of the metal - Q is the heat lost by the block - m_m is the mass of the block - c_m is the specific heat capacity of the metal

Substituting the values, we get:

-65°C = -108,680 J / (500g * c_m)

Simplifying the equation, we find:

c_m = -108,680 J / (-65°C * 500g)

Calculating this, we find that the specific heat capacity of the metal is approximately 3.34 J/g°C.

Now, we can compare the specific heat capacity of the metal to known values for different metals to determine which metal the block is made of. Unfortunately, the specific heat capacity values for metals are not provided in the search results. Therefore, we cannot determine the exact metal of the block based on the given information.

Please note that the specific heat capacity values for different metals can vary, so it would be helpful to have more information or conduct further experiments to accurately determine the metal of the block.