3.50M solution? Show your work! What is the molarity of these solutions? Show your work!

a. 3.5 mol HBr in 500 mL of water

b. 0.0750 mol NaCl in 250.0 mL of water

c. 1.95 mol AgNO3 in 1.2 L of water

d. 0.500 mol NH3 in 2.5 L of water

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?

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

If a particle has z = 25 and 23 electrons, what is its charge?