There are 100g of two different compounds that are composed of sulphur and
oxygen
The first compound
contains 50g of sulphur and second compound contains
40g of sulphur. show how these data illustrate the Law
of multiple proportions

For each of the following mixtures decide if filtering would be suitable to separate the substances. explain your answers. oil in water sugar in water sand in water chalk in water tea leaves in a cup of tea

Evaluate this exponential expression,8. (2 + 3)2 – 42

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?