During the combustion of 5.00 g of butane in the presence of oxygen, 4.01 g of carbon dioxide and 3.55 g of water is given off. how much oxygen was needed to totally combust the butane?

iron combines with 4.00 g of copper (11) nitrate to form 6.01 g of iron (i) nitrate and 0.400 g copper metal. how much iron did it take to convert the cu(no3)2?

Amylase becomes denatured at a temperature of 80°c. during an experiment to study the effect of varyingtemperature on enzyme activity, amylase’s reactivity with starch was measured at body temperature (37°c), andthen again at an increased temperature of 42°c. how would this increase in temperature affect the experiment

How can an organ, such as the lungs, work for multiple body systems?

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?