What is the total number of protons in the nucleus of an atom of potassium-42?

Which of the following elements are in this chemical reaction Na (s) + MgF2. (s). - NaF (s) +. Mg?

A scientist wants to know how individual lions within a pride interact with each other in their own environment. To do this, the scientist sedates and tags all of the lions within a pride.

Methane and hydrogen sulfide form when hydrogen reacts with carbon disulfide. identify the excess reactant and calculate how much remains after 36 L o fH2 reacts with 12 L of CS2 all at STP

How many moles of carbon are in 7.87x10' carbon atoms?

The element Oxygen, O, is an example of which of the following? Question 8 options: compound molecule atom mixture

How many moles of ba (oh) 2 are present in 275 ml of 0.200 m ba (oh) 2?

The molecular weight of vitamin C, CH06, is 176.12 8 mol What is the mass, in grams, of 0.000142 mol of vitamin C? Express the answer using 3 significant figures. 09

When The reaction below demonstrates which characteristic of a base? Upper C U upper S upper O subscript 4 (a q) plus 2 upper N a upper O upper H (a q) right arrow upper C u (upper O upper H) subscript 2 (s) plus upper N a subscript 2 upper S upper

With the exception of a species that lives near the Florida coast, sea urchins are basically harmless to people. Which word is an adjective?

Will some one add me as a friend