A student burns 1.02 g of iron in a crucible. The solid that remains after the combustion has a mass of 1.46 g

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

Which of the following compounds would be expected to have the strongest ionic bonds? a)the compound that has b)the largest ions with the greatest charge c)the compound that has d)the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge