Chemistry, 02.12.2020 16:40 rwallacejr803
Să se determine natura agresivităţii şi gradul acesteia în cazul unei ape care conține:
- CO2 liber 40 mg/l,
- are Dt = 9 oG,
- sulfați 1200 mg/l,
- celelalte componente sunt in concentrații neglijabile.
Să se stabilească măsurile de protecţie primară dacă apa acţionează asupra unei construcţii din
beton armat, cu diametrul maxim al agregatelor dmax= 31,5 mm.
Answers: 1
Chemistry, 21.06.2019 23:30, hellokitty1647
For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i. e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.
Answers: 3
Chemistry, 22.06.2019 18:00, kamjay2006
The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.
Answers: 1
Să se determine natura agresivităţii şi gradul acesteia în cazul unei ape care conține:
- CO2 liber...
Health, 05.08.2020 17:01