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Ainat [17]
4 years ago
13

What's compound streak mean in science

Chemistry
1 answer:
Marysya12 [62]4 years ago
5 0
Streak is the color a solid substance leaves behind when it is used to scratch a white porcelain tile. This is often different than the apparent color of the substance upon first visual examination, and it is a more accurate way to identify a substance (usually rocks and minerals) because while external color often varies from sample to sample, streak color is consistent.
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Explanation:

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Do free electrons appear anywhere in the balanced equation for a redox reaction?
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Yes, free electrons appear in balanced redox reaction equations. However, this is only true for half-reactions. This is because redox reactions primarily involve the transfer of electrons, which are better visualized if explicitly shown in the balanced reactions. In reduction reactions, electrons are placed on the left side of the equation. Oxidation reactions show electrons on the right side of the equation.


Explanation:

A half reaction is either the chemical reaction or reduction reaction part of an oxidoreduction reaction. A half reaction is obtained by considering the amendment in chemical reaction states of individual substances concerned within the oxidoreduction reaction. Half-reactions are usually used as a way of leveling oxidoreduction reactions.The half-reaction on the anode, wherever chemical reaction happens, is Zn(s) = Zn2+ (aq) + (2e-).

The metal loses 2 electrons to create Zn2+. The half-reaction on the cathode wherever reduction happens is Cu2+ (aq) + 2e- = Cu(s).

Here, the copper ions gain electrons and become solid copper.

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3 years ago
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How many liters of water vapor can be produced if 13.3 liters of methane gas (CH4) are combusted, if all measurements are taken
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To get the number of liters of water vapor produced from the combustion of methane gas, we just need the stoichiometric ratio of water to methane which is 2:1. So the number of liters of water vapor from 13.3 liters of methane is 26.6 liters.
6 0
3 years ago
Your blood contains 2 L of Nitrogen at 1 atm. When you go scuba diving at the Great Barrier Reef, the pressure increases to 8.7
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Answer:

Divers breathe compressed air that contains nitrogen. At higher pressure under water, the nitrogen gas goes into the body's tissues. ... Nitrogen narcosis: Deep dives can cause so much nitrogen to build up in the brain that you can become confused and act as though you've been drinking alcohol.Oxygen becomes rapidly toxic at depth – prolonged exposure to pure oxygen below a few metres can kill you. It is not an appropriate scuba tank gas mixture. ... Oxygen is also highly reactive and can make other substances flammable. Safety training is necessary to work with pure oxygen.

Explanation:

I hope this helped,i m sorry if its not the exact answer you need.

6 0
3 years ago
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