Methane molecules (the overwhelming majority of the molecules in natural gas) are composed of 25.1% hydrogen and 74.9% carbon, by mass. if there is a reaction between 115.1 g of carbon with 34.7 grams of hydrogen, how many grams of methane could be produced?

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

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.

How is the atomic number of a nucleus changed by alpha decay