In the chemical formula 3NO2 the number 3 is a

1. An acid is a substance that has a pH value that is lower than 7. A base is a substance that has a pH that is greater than 7. Citric acid commonly present in sour foods. Which one of these might be the pH of a citric acid solution? pH=3.2 pH=7.

What characteristic of the molecule is important for this force to be effective in bonding?

What is your most convincing piece of evidence?

The modern periodic table is organized according to atomic mass true or false

What is the process of breaking down food to release energy by adding oxygen

Constant motion on earths surface

Which electromagnetic radiation on the electromagnetic spectrum can be detected by the human eye? Question 15 options: Radio X-Ray Microwaves Visible light

Which group of elements contains the most reactive metals? iron triad transition metals alkali metals alkaline earth metals

What important consideration needs to be made about the use of plastic sealing gaskets with oxygen regulators?

Which question cannot be explained by chemistry? A. How does yeast make bread dough rise? B. Why does sugar dissolve faster in hot water? C. How does a convection oven cook food? D. Why do peeled apples turn brown in air?