An atom's mass number is 210 and its atomic number is 85. How many neutrons does the atom have

What mass of sodium sulfate is needed to make 2.5 L of 2.0 M solution? A 120 g B 150 g C 180 g D 710 9 E 750 g

Arrange from highest to lowest in order of decresing mass: 1 Gg, 100 g, 1 kg, 50 cg, 1 cg, 1 dg, 50 million ng

Which of the following is a common source of groundwater pollution? A. Oil dumping and Oil Spills B. Tossing candy bar wrappers into a stream C. Flushing household chemicals down the toilet D. Leaking storage containers outside factories

A solution of an unknown acid had a ph of 3.70. titration of a 25.0 ml aliquot of the acid solution required 21.7 ml of 0.104 m sodium hydroxide for complete reaction. assuming that the acid is monoprotic, what is its ionization constant

What scientific knowledge was necessary for Kroto, Smalley, and Curl to discover buckyballs? Check all that apply. All matter is made of atoms. Atoms bond together in certain ways. Carbon atoms have a specific mass.

Becky leaves home and write a distance of 30 KM it took her 2.5 hours what is her speed

Describe the weather associated with a high presurre system

Which of the following is equal to distance/time?

Which of the following should you always wear to avoid being thrown from a vehicle and then crushed if it tips over?

If the titrant has a molarity of 0.1000 m and there are 45.00 ml of analyte present, what is the molarity of the analyte?