Which of the following represents a pair of isotopes?

F 1h and 3h

G 16O2 - and 19F-

H 40K and 40Ca

J 16O2 - and 32S2-

In the combustion of hydrocarbon, carbon monoxide is formed. What has occured?

To test the quality of water sources in her area, Shameka collects five samples from each water source and tests the quality of each sample.

The number of Mg2 + ions in 25 mL of 1.14 M magnesium chlorode

What volume of 0.480 m koh is needed to react completely with 15.8 ml of 0.150 m h2so4? assume the reaction goes to completion?

Cody uses a can opener to open a can of soup. The can opener can be referred to as what? wedge lever simple machine complex machine

What part of an atom do we change for isotopes

The Safe Drinking Water Act (SDWA) sets a limit for mercury-a toxin to the central nervous system-at 0.002 mg/L. Water suppliers must periodically test their water to ensure that mercury levels do not exceed 0.002 mg/L.

The smallest unit of an element is a blank

How many sodium atoms will create an ionic bond with sulfur?

Rank the elements from smallest to largest electronegativity negativity (smallest at top) 1. N 2. P 3. As 4. Sb