In the early twentieth century, what was alexander fleming's hypothesis concerning the relationship between a yellow green mold and certain strains of bacteria

3. Which net ionic equation describes this reaction? 3Ca (OH) 2 (aq) + 2FeCl3 (aq) → 3CaCl2 (aq) + 2Fe (OH) 3 (s) 3Ca2 + (aq) + 3OH - (aq) + Fe3 + (aq) → Fe (OH) 3 (s) + CaCl2 (aq) Fe3 + (aq) + 3OH - (aq) + 3Ca2 + (aq) → Fe (OH) 3 (s) + 3Ca2 + (aq)

Which of the following best describes Newton's First Law of Motion? (more than one answer applies) F=m • a A swimmer turns and kicks off from the end of the pool. A book will slide across the desk if you exert a force on it.

The chemical formula for table sugar is c12h22o11. what can you tell from this formula

Which describes a characteristic of a terminal moraine? A. It can cause sediment to be deposited in sandy ridges. B. It can create a group of teardrop-shaped hills. C.

Which compound forms a green aqueous solution

A new element has two isotopes, one with a mass of 40.0 amu and the other with a mass of 42.0 amu. the atomic weight is 40.50 g/mol. pick the true statement a. the isotope at 42.0 amu is less abundant b. the element has 19 protons and 21 neutrons c.

What are some advances in genetics

If the substance in the diagram was heated to "T2," what is happening if the substance is allowed to approach T1? Select all that apply. The average kinetic energy is decreasing. The average kinetic energy has increased.

When you pass the foodstall you can smell what is cooking, explain why this happen by particle theory

Which of the followinWhich term describes this reaction? Upper C upper H subscript 3 upper B r (a q) plus upper O upper H superscript minus (a q) right arrow upper C upper H subscript 3 upper O upper H (a q) plus upper B r superscript minus (a q).