Does Carbon have a valence electrons

1. explicar la afinidad electrónica del aluminio al cloro 2. energía de ionización del litio al cesio 3. el radio atómico del boro al talio 4. el carácter metálico del yodo al indio

Which substance has Hf defined as 0 kj/mol? A. H2O (s) B. Ne (I) C. F2 (g) D. Co2 (g)

What would stars be like if hydrogen had the smallest mass per nuclear particle?

What is a renewable source of energy? a. An energy resource that is used up over time. b. An energy resource that is available and can be recreated. c. An energy resource that is no longer used. d.

What type of reaction does this equation represent? 2I4O9 (s) → 4I2 (s) + 9O2 (g)

4) Acompound has an empirical formula of Na2co3, and a molar mass of 3.18g/mol. Find its molecular formula.

How many molecules of glucose, C6H12O6, can be "burned" biologically when 283.2 grams of oxygen is a available?

Why does acids that has been accidentally spilled on a book cause the colour of the book cover and the ink to change?

How many moles of H2O will be required to make 19.2 moles of O2

Calculate the energy required to heat 406.0mg of cyclohexane from 33.5°C to 38.9°C. Assume the specific heat capacity of cyclohexane under these conditions is 1.85·J·g^-1K^-1. Be sure your answer has the correct number of significant digits.