3. Which means of particle transport requires input of energy from the cell?

diffusion

osmosis

facilitated diffusion

active transport

What is the coefficient of Ca (OH) 2 in the equation Ca (OH) 2 + HNO3 → Ca (NO3) 2 + H2O when balanced using the smallest possible coefficients?

Which phase change involves and increase in the attractive force between molecules? A) condensation B) evaporation C) melting D) sublimation

What is the pH of ammonia? I know the pH of ammonia varies depending on concentration, so what's the pH of pure ammonia?

How is a chemical equation used to represent a chemical reaction? 1. The atoms on the left side of the arrow are different from the atoms on the right, but are arranged similarly. 2.

How many carbons atoms are in propane?

Sunlight produces a spectrum of colors that includes what?

Which of the following is not a common use of gypsum? a. wallboard/drywall for homes b. a primary ingredient for toothpaste c. surgical splints and casts d. pH reducing agent for acidic soils

In which of the following are the symbol and name for the ion given correctly A. NH4+: ammonia; H+: hydride B. C2H3O2-: acetate; C2O4-: oxalite C. OH-: hydroxide; O2-: oxide D. PO3 3-: phosphate; PO4 3-: phosphite

If you add a large piece of zinc to a beaker of acid and, in a separate beaker, zinc shavings to a beaker of acid (of equal concentration/volume), the sample with the zinc shavings will react faster than the sample with the large piece.

How many atoms of oxygen are in 0.100 miles of silicon dioxide, SiO^2