What is sin? can

you explain me? anyone? l

Why does temperature increase with altitude through the stratosphere? All layers of the atmosphere increase in temperature with altitude. The ozone layer is found in the stratosphere. The air molecules are closer together in the upper stratosphere.

Which statement is true about oxygen and rocks? Both are mixtures. Both are pure substances. Oxygen is a mixture and a rock is a pure substance. Oxygen is a pure substance and rocks are mixtures.

Which is best metal to use in an alloy to increase its electrical conductivity

What is classified as a pure substance. A: Compound B: Colloid C:Solution D: Homogeneous Mixture

You need to prepare an acetate buffer of pH 5.50 from a 0.872 M acetic acid solution and a 2.41 M KOH solution. If you have 580 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a buffer of pH 5.

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?