What is the mass of 2.56 × 10–4 moles of fe2o3? : 6.23 × 105 159.6 g 1.60 × 0–6 g 4.09 × 10–2 g

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Which fact represents evidence for the big bang theory?

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?