Which of the following is a density-independent factor? a. disease b. predation c. natural disasters d. stress

What is common of volcanoes that have the most violent eruptions? A. They feature magma with very high silica content. B. They are shield volcanoes. C. They feature magma with low viscosity. D. They have no magma, but have much lava.

The decomposition of dinitrogen pentaoxide has an activation energy of 102 kj/mol and / delta? h°rxn = + 55 kj/mol. what is the activation energy for the reverse reaction?

How do hydrosphere and Biosphere compare

How many coulombs of positive charge are there in 1.2 kg of carbon? Twelve grams of carbon contain Avogadro's number of atoms, with each atom having six protons and six electrons.

Match each element with the number of atoms found in one molecule of this compound: C5H7N (nicotine)

What ionic bond occurs between what particles? A. Two Negative Ions B. A positive and negative ion C. Two positive ions D. Two neutral atoms

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these

What is the mass of a box of nails

In a phase change of water between the liquid and the gas phases, 770.1 kJ of energy was released by the system. What was the product, and how much of it was formed in the phase change? (dа ta: H₂O (l) → H₂O (g) ΔH = 44.01 kJ/mol.) A.

Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium. Chemical equation for producing ammonia: N2 + 3H2 ⇌ 2NH3 + energy