Determine how much iron reactant iron was present. Fe + cu(nog)^2 4.00g FeNO3 6.01g + Cu 0.400g​

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.