A pet owner dropped some new fish into a pond. Several species of fish lived in the pond, but within a few months, only members of the new species survived. What best explains why this happened?

Calculate the mass of NaF that must be added to 300ml if a 0.25m HF solution to form a buffer solution with a ph of 3.5

Define homopolysaccharides

Which of the following electron configurations belong to an element that is the most chemically reactive

What is a rock that leaves a red trail when scraped

An environmental change is occurring due to continents shifting and moving to different parts of Earth's surface. What kind of change is this?

Consider the circuit 9.012 9.012 What is its equivalent resistance? Answer in units of 12.

out of 2.00 50 mL of water is added to 30 mL of a 0.50 M salt solution. What is the new concentration? (To write your answer using scientific notation use 1.0E-1 instead of 1.0 x 10-1)

If one object has more mass than another then it weighs more or less than the other object?

What is most believed by most scientists about the age of our solar system.

The water level in a graduated cylinder stands at 20.0 ml before and at 26.2 ml after a 16.74 g metal sample is lowered into the cylinder. what is the density of the sample. what metal is the sample most likely to be