A solution is made by putting 100 g of NaNO3 into 200 mL of water at 70 degrees C.If the solution cools to 20 degrees C , how much salt precipitates out?

We use PE bags as containers for wet food because the plastic repels ions and water but grease, fats and oils leave stains on the plastic.  Explain in terms of structure why is this so?

A 7 cm-thick beef steak is being frozen in a -40°C room. The product has 73% moisture content, density of 970 kg/m 3, and thermal conductivity (frozen) of 1.1 W/(m K). Estimate the freezing time using Plank’s equation. The product has an initial freezing temperature of -1.75°C, and the movement of air in the freezing room provides a convective heat-transfer coefficient of 10 W/(m2 K).

2. A piece of beef steak 10 cm thick will be frozen in the freezer room -25 ° C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W / (m K). freezing time using the Plank equation. This product has an initial freezing temperature of -1.75 ° C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 15 W / (m² K).  t f = Answer  hour.

The air has a dry ball temperature of 32 ° C and a wet bulb temperature of 24 ° C is initially heated in a heater so that the dry ball temperature increases to 80 ° C. Then the air is passed through the pile of corn kernels to dry. The air that comes out of the corn kernels is at a dry bulb temperature of 55 ° C. Then this air is passed to the dehumidifier to reduce the RH to 10%. Draw the course of this process of changing the air on a psychrometric diagram. The airflow rate through the corn kernels pile and dehumidifier is 3.0 m / s and the cross-sectional diameter of the pile is 0.7 m. a. Determine the amount of water lost from the corn kernels heap (in grams of water / second) = .... (grams of water / second). b. Determine the amount of water lost from the air when passing through the dehumidifier (in grams of water / second) = .... (grams of water / second

C) Calculate the POH of 2x10* M of hydrochloric acid solution.

In an adsorption process, this is the material which adsorbs the contaminants/unwanted materials in the original solution. * O Adsorbent O Absorbate O Adsorbate O Absorbent

find the analysis of WET products by mass when propene (C,H,) is burned with 15% excess air supplied

Dissolving 2 g of Lithium chloride in 50 g of water raises the water temperature by 5.1 °C Does dissolving this chemical release or absorb heat

2. A 5 cm-thick beef steak is being frozen in a -30°C room. The product has 73% moisture content, a density of 970 kg/m 3, and thermal conductivity (frozen) of 1.1 W/(m K). Estimate the freezing time using Plank's equation. The product has an initial freezing temperature of -75°C, and the movement of air in the freezing room provides a convective heat-transfer coefficient of 5 W/(m 2 K).