Chemistry, 20.04.2021 16:40 lilsnsbsbs
During a Solar eclipse, the is blocking the light from the so a shadow appears on the .
During a lunar eclipse, the is blocking the light from the so a shadow appears on the .
Lunar eclipses are more able to be seen because the Earth is than the .
When a solar eclipse occurs, do not look directly at the sun because the light will harm you. There is no fill in the blank. All you have to do is type OK.
Answers: 2
Chemistry, 22.06.2019 03:20
Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base
Answers: 1
Chemistry, 22.06.2019 09:00
This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.
Answers: 2
Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) β c2h2 (g) + caoh2 (s) =Ξ΄hβ414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) β 5ch2chco2h (g) =Ξ΄h132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
Chemistry, 22.06.2019 21:30
Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet
Answers: 2
During a Solar eclipse, the is blocking the light from the so a shadow appears on the .
During a...
Mathematics, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Chemistry, 18.05.2021 19:10
Chemistry, 18.05.2021 19:10
History, 18.05.2021 19:10
History, 18.05.2021 19:10
Computers and Technology, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Advanced Placement (AP), 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
English, 18.05.2021 19:10