How do plants obtain nitrogen? They remove it from the air.

They absorb it through their roots.

They fix it in their leaves.

They produce it in their stems.

The reaction in an experiment is the Wittig synthesis of 1,4-Diphenyl-1,3-Butadiene, and one of the questions is: In the reaction for this experiment, carbon is nucleophilic.

The leaves on a green plant soak up sunlight to make food. A cow's stomach digests grass that was eaten. These are examples of which characteristic of life? A) growth B) homeostasis C) metabolism D) heredity

The reaction 2 Cu + O2 → 2 CuO has long been called an oxidation-reaction. Copper also reacts with chlorine: Cu + Cl2 → CuCl2. In such a reaction: a. Copper is also oxidized even though no oxygen is present. b. Chlorine is oxidized. c.

A beaker with water and marbles is

Water has unique properties which include its strength as a solvent; its three environmental stages of solid, liquid, and gas; and its temperature regulation. these properties are due to polar covalent bonds between oxygen and hydrogen.

There is a large increase in ionization energy between the second and the third ionization energies of a metal. What kind of ion is the metal likely to form? Include the charge in your answer.

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.

How many sulfide ions are present in 23.5g of Sb2S3

2. An automobile tire has a pressure of 210 kPa at 293 K. What will be the tire pressure after driving, if the tire temperature rises to 308 K?

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g