The gradient of a stream depends on its

The mole fraction of oxygen molecules in dry air is 0.2095. What volume of dry air at 1.00 atm and 25°C is required for burning completely 1.00 L of octane (C8H18, density = 0.7025 g/mL), yielding carbon dioxide and water?

Which constants would most likely be filled in the first row of the table? A. temperature and moles of gasB. volume and temperatureC. pressure and volume D. pressure and moles of gas

Cu + 2AgNO3 + Cu (NO3) 2 + 2Ag How many grams of Cu react with 105.2 g of Ag?

Erica is working in the lab. She wants to remove the fine dust particles suspended in a sample of oil. Which method is she most likely to use? A reverse osmosis B osmosis C filtration D dilution

The molar mass of methane is 16.04 g/mol. Calculate the number of moles of methan burned in the experiment.

Physical properties can be used to describe matter. Some properties are dependent on the amount of matter present. All BUT ONE of these physical properties changes with the amount of matter. That is A) density. B) mass. C) volume. D) weight.

Which term best describes the substances that cause oil and water molecules in salad Dressing to interact and mix? surfactants miscible liquids immiscible liquids compressed molecules

Two molecules have the same molecular geometry but different electron domain geometries. Which combination of atoms and lone pairs around the central atom could describe these molecules?

High zinc intakes can inhibit the absorption of copper true or false

Which is the theoretical reason behind the framers favoring of a bicameral congress?