What's the different between activity and concentration?

Are these compouds - ammonia and NH3 ionic or covalent?

Which of these is metamorphic rock formed from limestone? A. sandstone B. clay C. shale D. marble

A sports car and a fully loaded semi truck pull side by side at a red light. Using your knowledge of acceleration, predict which will accelerate faster when the traffic light turns green. Cite reasons for your answer.

Describe the sources of water pollution in hydrological cycle.

Which two elements most likely have the most similar properties? beryllium and boron scandium and silicon nitrogen and phosphorus hydrogen and helium

Which organ system consists of the following levels of organization? kidney cells - - > kidney tissues - - > kidney A. excretory B. circulatory C. respiratory D. integumentary

Identify the product of radioactive decay and classify the given nuclear reactions accordingly.

If a 860. ml of linseed oil has a mass of 680 g, what is the density of the oil

Without any force to change it, an object at rest stays at rest and an object in motion stays in motion. This demonstrates which of Newton's Laws? Question 3 options: (A) Newton's First Law (B) Newton's Second Law (C) Newton's Third Law

You are examining the DNA sequences that code for the enzyme phosphofructokinase in skinks and Komodo dragons.