Chemistry, 03.03.2021 20:00 bentleyking1k
Red tape can be used to repair a broken taillight on a car. In one or two sentences, explain how different colors of light are transmitted, reflected, and absorbed by this kind of tape.(2 points) Please hurry
Answers: 2
Chemistry, 21.06.2019 22:00
To save time, you can approximate the initial mass of the solid to the nearest ±1 g. for example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g. which of the following sets include two samples with an equal density? which all that apply below 15.4 g gold and 18.7 g silver 15.2 g copper and 50.0 g copper 20.2 g silver and 20.2 g copper 11.2 g gold and 14.9 g gold
Answers: 1
Chemistry, 21.06.2019 22:30
Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?
Answers: 1
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
Chemistry, 23.06.2019 07:10
1) a light bulb takes in 30 of energy per second. it transfers 3j as use energy. calculate the efficiency. second. it transfers 3j as useful light energy and 27j as heat energy. calculate the efficiency
Answers: 1
Red tape can be used to repair a broken taillight on a car. In one or two sentences, explain how dif...
Social Studies, 07.07.2019 13:30
Social Studies, 07.07.2019 13:30
History, 07.07.2019 13:30
Mathematics, 07.07.2019 13:30
Biology, 07.07.2019 13:30
Chemistry, 07.07.2019 13:30
English, 07.07.2019 13:30
Mathematics, 07.07.2019 13:30
Geography, 07.07.2019 13:30
Mathematics, 07.07.2019 13:30
Mathematics, 07.07.2019 13:30