Which situation is an indication that a chemical change has occurred?
a. no heat is released...
Chemistry, 24.01.2020 20:31 Killion2022
Which situation is an indication that a chemical change has occurred?
a. no heat is released.
b. a gas is formed.
c. no color change occurs.
d. the temperature does not change.
Answers: 1
Chemistry, 21.06.2019 23:00
What is the formula that this ionic compounds could form sr2+p3-o2-
Answers: 3
Chemistry, 22.06.2019 04:00
What layer of the atmosphere is directly above the troposphere?
Answers: 1
Chemistry, 22.06.2019 07:30
The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.
Answers: 2
Chemistry, 22.06.2019 10:30
Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic
Answers: 1
Mathematics, 05.01.2021 01:00
Mathematics, 05.01.2021 01:00
Arts, 05.01.2021 01:00
Mathematics, 05.01.2021 01:00
Physics, 05.01.2021 01:00
Mathematics, 05.01.2021 01:00
English, 05.01.2021 01:00
Social Studies, 05.01.2021 01:00
History, 05.01.2021 01:00
Chemistry, 05.01.2021 01:00
Biology, 05.01.2021 01:00