How many helium atoms will have the same mass as a sulfur atom?

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d