The sum of the ages of a brother and sister is 26. give an equation that represents this statement using b as the age of the brother and s as the age of the sister

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Which element is the least metallic between cadmium, silver, zinc, or iron?

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world