Study the equation 3Fe + __02 --> Fe304. What coefficient must be written to the left of oxygen (O) to balance this
equation?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

Complete the following statements to describe solids, liquids, and gases. select the correct answer from each drop-down menu. a solid a definite volume and a definite shape. a liquid a definite volume and a definite shape. a gas a definite volume and a definite shape