Why is it important to use the correct number of significant digits when reporting the results of an experiment

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.