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nadezda [96]
3 years ago
5

Reverberation in concert halls is caused by ____. a. diffraction c. diffusion b. refraction d. reflection Please select the best

answer from the choices provided A B C D
Chemistry
1 answer:
Tanya [424]3 years ago
6 0
It's D reflection. I found the answer on quizlet.
https://quizlet.com/127051840/chapter-12-sound-flash-cards/  
That is the link to the quizlet.
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An internal combustion engine relies primarily on the efficient production of energy by the combination of oxygen (02) and gasol
jeka57 [31]
Answer is: <span>the exact ratio of oxygen to octane for is 12.5 : 1.
</span>Balanced chemical reaction: C₈H₁₈ + 25/2O₂ → 8CO₂ + 9H₂O or multiply by 2:
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There same number of atoms on both side of balanced chemical reaction: eight carbon atoms, eighteen hydrogen atoms and twenty five oxygen atoms.

7 0
3 years ago
Density is ___ to pressure
Ann [662]
Proportional to pressure
5 0
3 years ago
Какая масса хлора и какое количество вещества необходимо для реакции с 12г магния при получении хлорида магния?
Naddika [18.5K]
Mg + Cl₂ = MgCl₂M(Mg) = 24г/моль  m 1 моль Mg = 24 г.По условию задачи дано 12г. Mg  Количество вещества n(Mg) =12÷24=0,5 мольРассуждаем: по уравнению реакции  с 1 моль магния реагирует 1 моль хлора, следовательно с 0,5 моль будет реагировать 0,5 моль хлора.1 моль хлора при н.у. занимает объем 22,4л. , тогда 0,5 моль хлора займет:0,5х22,4л.= 11,2л. Ответ: Для взаимодействии 12 г.  магния потребуется 11,2 л. хлора.
7 0
3 years ago
A method of problem solving that uses the units that are part of a measurement to solve a problem
zzz [600]
I believe dimensional analysis
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Use what you know about phase changes, mixtures, and chemical reactions to answer the following questions.
saveliy_v [14]

Answer:

D- beaking bread

Explanation:

The trapped carbon dioxide makes the dough rise, and the alcohol evaporates during the baking process this is an irreversible chemical change.

5 0
3 years ago
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