Chemistry, 27.10.2020 18:50 KevinReed6444
Which substance combines with iron in the presence of water to form rust?(1 point)
carbon dioxide
acid
oxygen
nitrogen
Which process is most likely responsible for the formation of limestone caves?(1 point)
hydrolysis
oxidation
carbonation
abrasion
Which option best describes hydrolysis?(1 point)
oxygen in water combining chemically with substances in rock
carbon dioxide reacting with water to form an acid that dissolves minerals in rock
hydrogen in water combining chemically with substances in rock
water reacting chemically with minerals in rock
Which type of region would be most likely to support chemical weathering?(1 point)
a polar region that is cold and dry all year long
a temperate region with warm summers and cold winters
a tropical region that is hot and humid all year long
a desert region with very little rain
Answers: 2
Chemistry, 21.06.2019 19:00
The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production
Answers: 3
Chemistry, 22.06.2019 03:30
Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o ā h2co3. if 495 milliliters of carbon dioxide at 25Ā°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!
Answers: 1
Chemistry, 22.06.2019 18:10
Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
Which substance combines with iron in the presence of water to form rust?(1 point)
carbon dioxide
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