Asubstance did not change its chemical nature in a reaction. which most likely describes the reaction? a)it was heated. b)it was hit with a hammer. c)it was placed in a salt solution. d)it was frozen.

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device