Question

M₁ = 20 кгt₁ = 10°Ct₂ = 40°C t = 20°Cm₂-?​

Answer 1

To find the mass (m₂) of a substance when you know its initial mass (M₁) and the temperatures (t₁ and t₂) at which it was initially at, as well as the final temperature (t), you can use the principle of heat transfer.

The formula you can use is:

$$M₁ * c₁ * (t - t₁) = m₂ * c₂ * (t₂ - t)$$

Where:

• $M₁$ is the initial mass of the substance (20 kg in your case).
• $t₁$ is the initial temperature (10°C in your case).
• $t₂$ is the final temperature (40°C in your case).
• $t$ is the temperature at which you want to find the mass (20°C in your case).
• $m₂$ is the mass you want to find.
• $c₁$ is the specific heat capacity of the substance at temperature $t₁$.
• $c₂$ is the specific heat capacity of the substance at temperature $t₂$.

To solve for $m₂$, you need to know the specific heat capacities of the substance at the given temperatures $t₁$ and $t₂$. These values can vary depending on the substance. If you provide the specific heat capacity values, I can help you calculate $m₂$.