in a certain chemical the ratio of zinc to Copper is for 211 a jar of the chemical contains 385 grams of copper how many grams of zinc does it contain.

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?

The half-life of a certain material is 0.004 second. approximately how much of a 20-gram sample will be left after 0.016 second? a. 5 grams b. 16 grams c. 0.32 gram d. 1.25 grams