Sentences for chemical energy

What are two things that you observed when you heated the mixture of tin and nitric acid over the Bunsen burner in the virtual lab, and why was it necessary to heat the mixture in order to determine the empirical formula?

A student touches a freshly baked cake that was taken out of the oven. Which best explains why the cake feels hot? Options: Molecules in the skin are moving faster than molecules in the cake.

How many moles of cesium xenon heptafloride can be produced from the reaction 12 mol cesium Floride with 14 mol xenon hexafloride

Use the Activity Series Chart Which of the metals (Fe, Zn, Mg) will react in an aqueous solution of Al (NO3) 3 to produce aluminum metal?

A compact disc has a diameter of 11.8 cm. What is the surface area of the disk in square centimeters? In square meters?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda