Aluminum has a density of 2.70 g/ml. calculate the mass (in grams) of a piece of aluminum having a volume of 405 ml .

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

What the blanks in these lines are ?