Bronze is an alloy made of copper (cu) and tin (sn). calculate the mass of a bronze cylinder of radius 6.44 cm and length 44.37 cm. the composition of the bronze is 79.42 percent cu and 20.58 percent sn and the densities of cu and sn are 8.94 g/cm^3 and 7.31 g/cm^3, respectively. what assumption should you make in this calculation?

Heat flow inside earth activity i chose chemistry cause there is no science alert! the newspaper has been hacked, and all of the headlines have been changed to reflect old legends. it is your task to make sure they are corrected. choose one of the newspaper headlines. you will rewrite the headline and a one-to-two-paragraph article to make the news scientifically correct. be sure to include the following in your corrected newspaper article: new title reflecting correct information detailed information about the processes and tectonic plate interactions that are causing the geological event to occur real-world example of where to find the geological event on earth (picture and location) also review the grading rubric before you begin.

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?