When an atom that has no charge loses two electrons, it becomes a:

A: positive ion.

B: negative ion.

C: positive isotope.

D: negative isotope.

What is the difference between atomic mass and atomic number

A 5.0 gram sample of lead and a 3.2 g sample of iron are placed into 367 mL of water. What will be the new volume level of water in units of mL? The density of lead is 11.34 g/cc and the density of iron is 7.874 g/mL.

Why is it important for scientist to review and repeat the work of other scientists?

A monoprotic acid is dissolved in water to produce a 0.0136 M solution. The pH of the resulting solution is 2.45. What is the Ka of the acid?

Which of these, all of which include earth, most likely contains the most dark matter

Explain how thermal energy is transferred through convection.

What are the coefficients that will balance this skeleton equation? a l c l 3 + naoh → al (oh) 3 + nacl?

Which cluster in the agriculture industry would be most likely to partner with the animal systems cluster to introduce new modern procedures to animal careers

Sarah is ordering cheese pizza for a party of ten people she knows each pizza has 8 slices to figure out how many pizzas to order sarah needs to know the

How many grams of sodium ions are in na2so4?