It’s for my chemistry assignment A brick of gold has a mass of 1.00000Kg and measures to be 11.23cm long, 5.30 cm wide and 0.870 cm think. A.) What is the density of gold? B.) If you find a nugget of gold with the mass of 127.23 g, what is the volume of this nugget?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)