What is K2Cr2O7 name?

Which nuclear symbol correctly completes the following nuclear reaction? 1/0N+235/92U ___ + 143/55Cs+31/0n + energy 1) 4/2He 2) 92/37Rb 3) 90/37Rb 4) 143/55Cs

Give the full electron configuration for barium

Five more than two times the square root of a number is fifteen. What's the number

Difference between a row ("period") & a column ("group") on the periodic table and examples.

A 650.0 g hard-water sample contains 101 mg Ca. what is this concentration in parts per million

Submit At 25.0 C, a 10.00 L vessel is filled with 5.00 atm of Gas A and 7.89 atm of Gas B. What is the mole fraction of Gas B?

Which energy change occurs during boiling? A. Some heat energy of the substance is lost. B. Heat energy of the substance remains the same. C. Most heat energy of the substance is lost. D. Heat energy is absorbed by the substance.

How many liters of phosphine are formed when 0.42 L of hydrogen react with phosphorus

Which sample of matter has the greatest distance between molecules at STP? A) N2 (g) B) NH3 (aq) C) C6H14 () D) C6H12O6 (s)

What happens is that passes through the Catapillar's in the small intestine