Answered

Discover the answers you need at Westonci.ca, where experts provide clear and concise information on various topics. Connect with a community of experts ready to help you find accurate solutions to your questions quickly and efficiently. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

How many kilograms of sour cream should be added (stirred into the water) to 0.5 litres of water at T=80°C to cool the water to 40°C, which is the ideal temperature for soup if the temperature of the sour cream (sour cream 20%) before it is added to the soup is 5°C?

Sagot :

onyebuchinnaji

The mass of the sour cream that should be added is 0.68 kg.

Mass of the water

Mass of the water is calculated as follows;

mass = density x volume

  • density of water = 1 kg/L

mass = (1 kg/L) x 0.5 L = 0.5 kg

Conservation of energy

Heat gained by the sour cream = Heat lost by the water

[tex]m_s c_s\Delta \theta _s = m_wc_w\Delta \theta _w\\\\m_s = \frac{m_wc_w\Delta \theta _w}{c_s\Delta \theta _s} \\\\[/tex]

where;

  • Cs is specific heat of sour cream
  • Cw is specific heat of water
  • Δθ is change in temperature

[tex]m_s = \frac{0.5 \times 4184 \times (80 - 40)}{3510 \times (40 - 5)} \\\\m_s = 0.68 \ kg[/tex]

Learn more about heat capacity here: https://brainly.com/question/16559442

We appreciate your visit. Hopefully, the answers you found were beneficial. Don't hesitate to come back for more information. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.