Chemistry, 16.10.2020 06:01 lamondrairving
Which statements about exothermic and endothermic reactions are correct? (its a multiple choice question)
1 During an exothermic reaction, heat is given out.
2 The temperature of an endothermic reaction goes up because heat is taken in.
3 Burning methane in the air is an exothermic reaction.
A) 1.2 and 3
B) 1 and 2 only
C) 1 and 3 only
D) 2 and 3 only
Answers: 2
Chemistry, 22.06.2019 02:00
How many moles of magnesium is 3.01 x10^22 atoms of magnesium?
Answers: 1
Chemistry, 22.06.2019 11:00
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
Answers: 2
Chemistry, 22.06.2019 17:30
Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world
Answers: 3
Chemistry, 22.06.2019 23:30
Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f
Answers: 2
Which statements about exothermic and endothermic reactions are correct? (its a multiple choice ques...
English, 02.07.2019 20:30
Social Studies, 02.07.2019 20:30
Mathematics, 02.07.2019 20:30
History, 02.07.2019 20:30
Mathematics, 02.07.2019 20:30
Mathematics, 02.07.2019 20:30
English, 02.07.2019 20:30
Spanish, 02.07.2019 20:30