Question

В 3-литровую банку налили2 литра воды и положили 40 грамм соли. Найдите содержание соли в воде . как она изменилась если через 2 дня из банки испарилось 300 грамм воды

Answer 1

Содержание соли в воде составляет 40*100% \ 2000= 2%
Если испарится 300 грамм воды : 40*100% \ (2000-300)=2 8\17%

Answer 2

Calculation of Salt Content in Water

To calculate the salt content in the water, we need to consider the initial amount of salt added and the change in the amount of water in the jar.

Given: - A 3-liter jar initially filled with 2 liters of water. - 40 grams of salt added to the jar.

To find the salt content in the water, we can use the formula:

Salt Content (in grams) = (Amount of Salt) / (Amount of Water)

Using this formula, we can calculate the salt content in the water:

Salt Content = 40 grams / 2 liters = 20 grams per liter.

Change in Water Content after 2 Days

According to the given information, after 2 days, 300 grams of water evaporated from the jar.

To calculate the new water content in the jar, we subtract the amount of water evaporated from the initial amount of water:

New Water Content = Initial Water Content - Amount of Water Evaporated

New Water Content = 2 liters - 0.3 liters = 1.7 liters

Therefore, after 2 days, the water content in the jar is 1.7 liters.

Please let me know if there's anything else I can help you with!