Which of the following is not one of the ways that weathered nutrients can return to an ecosystem's environment?

1. dissolved in water.

2. released into the atmosphere as a gas.

3. taken from the soil by plants.

4. taken from plants by animals.

Most of the mass of an atom comes from the (blank) and (blank)

A sample of gas has a volume of 571 mL at a pressure of 4.04 atm. The gas is compressed and now has a pressure of 7.17 atm. Predict whether the new volume is greater or less than the initial volume, and calculate the new volume.

If an element has 3 valence electrons, how many dots will be in the elements dot diagram?

What is the name for conversion factor that takes you from moles of compound "A" to ions of component "A" a) avogadro's number b) mole ratio c) molar volume d) molar mass

The accepted length of a steel pipe is 6.7 m. Calculate the percent error of each of these measurements. a. 6.8 m b. 6.1 m c. 6.7 m d. 6.6 m

Jasmine breathed against the window pane and noticed that her breath made a spot on it from the water vapor in her breath. Which stage of the water cycle does this show? A. precipitation B. evaporation C. condensation D. transpiration

Amber has developed a line of organic lotions and handmade soaps with unique, herb-based scents and a touch of bee balm. She plans to sell these products to the wealthy residents of a nearby resort town.

Two pure elements react to form a compound. One element is an alkali metal, X, and the other element is a halogen, Z. Which of the following is the most valid scientific claim that can be made about the compound? a. It has the formula XZ2 b.

Are protons positive and neutrons neutral

Why might it be useful to determine the elements that a planet or moon is made up of?