Pure substances and solutions are alike because they:

are both homogeneous

can both be homogeneous or heterogeneous

are both heterogeneous

are both types of mixtures

What are the three hypotheses that were proposed to explain the seismic activity of Pinatubo? What process generates sulfur dioxide gas emission at a volcano?

What type of mutation results when a nucleotide is dropped from a dna sequence?

How many peanuts do bison eat?

What the symbol for the oxygen isotope with 10 neutrons?

How many molecules of NO3 are there in 12 moles of NO3?

Consider the following thermochemical equation: C (s) + O2 (g) → CO2 (g) ΔH = - 393 kJ CO (g) + ½O2 (g) → CO2 (g) ΔH =

Two colorless solutions are mixed together. Bubbles form as the solution is stirred. Give TWO possible explanations for this result.

What is a light-year? A. the distance light travels in one earth year B. the distance light travels from the sun to the earth C. the distance light travels in one orbit of the moon D. the time it takes light to travel across the universe

What's is a logical way that you could begin to investigate why your tire had low air pressure?

after balancing the redox equation FeCl3+Zn--->ZnCl2+Fe, what are the coefficients, in order from left to right?