Chemistry, 29.01.2021 02:00 sebastiantroysmith
I NEED HELP! The quarter is ending for me tomorrow and I have to have this in, please help if you can.
Answers: 2
Another question on Chemistry
Chemistry, 21.06.2019 15:30
1. baking powder is a 1: 1 molar mixture of cream of tartar (khc4h4o6) and baking soda (nahco3). a recipe calls for two teaspoons (a total of 8.0 grams) of cream of tartar. how much baking soda must be added for both materials to react completely?
Answers: 2
Chemistry, 22.06.2019 01:30
Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%
Answers: 3
Chemistry, 22.06.2019 11:40
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.)
Answers: 1
You know the right answer?
I NEED HELP! The quarter is ending for me tomorrow and I have to have this in, please help if you ca...
Questions
Chemistry, 06.10.2020 14:01
Mathematics, 06.10.2020 14:01
Mathematics, 06.10.2020 14:01
English, 06.10.2020 14:01
Mathematics, 06.10.2020 14:01
Mathematics, 06.10.2020 14:01
Mathematics, 06.10.2020 14:01
Biology, 06.10.2020 14:01
