6. Which of the following pairs would most-likely have similar physical and chemical properties?
a. Lithium and Selenium
b. Vanadium and Radon
C. Sodium and Potassium

Which statement describes james chadwick’s discovery.

Explain that newton first law,second law and third law of motion?

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.