Chemistry, 20.01.2020 20:31 kaliyab191
Radon is a naturally occurring radioactive gas found in the ground and in building materials. it is easily inhaled and emits alpha particles when it decays. cumulative radon exposure is a significant risk factor for lung cancer. calculate the density of radon at 277 k and 0.950 atm of pressure.
Answers: 2
Chemistry, 22.06.2019 07:00
Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Chemistry, 22.06.2019 07:00
What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will
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
Radon is a naturally occurring radioactive gas found in the ground and in building materials. it is...
Mathematics, 20.11.2020 19:00
History, 20.11.2020 19:00
Mathematics, 20.11.2020 19:00
Mathematics, 20.11.2020 19:00
Mathematics, 20.11.2020 19:00
Mathematics, 20.11.2020 19:00
Mathematics, 20.11.2020 19:00
Social Studies, 20.11.2020 19:00
Mathematics, 20.11.2020 19:00
Social Studies, 20.11.2020 19:00