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AysviL [449]
3 years ago
8

Explain why current flowing indicates the presence of ions

Chemistry
1 answer:
seraphim [82]3 years ago
3 0

Explanation:

An electron current, the flow of electrons, contributes to an electric current since the electron 'carries' negative electric charge. ... The flow of ions (either positively or negatively charged) also contributes to an electric current in, for example, the electrolyte of an electrochemical cell.

hope it will work well?!

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how would the rate of diffusion change if the po2 in the capillaries was 40 mmhg and the po2 in the muscle cell changed from 40
BlackZzzverrR [31]

The rate of diffusion change would increase if the PO₂ in the capillaries was 40 mmHg and the PO₂ in the muscle cell changed from 40 to 20 mmHg.

Simple diffusion is the movement of molecular substances from a region of higher concentration to lower concentration. The mechanism with which the movement of O₂ travels from the blood to the body tissues takes place with the use of simple diffusion.

Now, if PO₂ changes from 40 → 20 mmHg in the muscle cells, and the PO₂ in the blood = 40mmHg. It implies that the pressure gradient(P) has increased. As such, there is an increase in the rate of diffusion of oxygen from the blood to muscle cells.

Learn more about diffusion here:

brainly.com/question/14392880?referrer=searchResults

6 0
3 years ago
Write a balanced half-reaction for the oxidation of chromium ion Cr + 3 to dichromate ion Cr 2 O − 2 7 in basic aqueous solution
SOVA2 [1]

Answer:

14 OH⁻(aq) + 2 Cr³⁺(aq) = Cr₂O₇²⁻(aq) + 7 H₂O(l) + 6 e⁻

Explanation:

In order to balance a half-reaction we use the ion-electron method.

Step 1: Write the half-reaction

Cr³⁺(aq) = Cr₂O₇²⁻(aq)

Step 2: Perform the mass balance, adding H₂O(l) and OH⁻(aq) where appropriate

14 OH⁻(aq) + 2 Cr³⁺(aq) = Cr₂O₇²⁻(aq) + 7 H₂O(l)

Step 3: Perform the electric balance, adding electrons where appropriate

14 OH⁻(aq) + 2 Cr³⁺(aq) = Cr₂O₇²⁻(aq) + 7 H₂O(l) + 6 e⁻

8 0
3 years ago
An article in Science News stated, "Noble gases are snobs." What did the author mean?
eduard

Answer:

Explanation:

Noble gases occupy the last group of the periodic table

They have fully filled valence electron shell

What this means is that they have attained stability and thus do not take part in chemical bonding that usually invloves the transfer or sharing of electrons

Thus, noble gases are snobs because they do not partake in chemical bonding with atoms of other elements or atoms of theirselves

8 0
1 year ago
What's the basicity of HBr?​
Rus_ich [418]

<em>Hydrogen bromide</em>

<em>Basicity (pKb) ~23</em>

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<em>#</em><em>◌⑅⃝●♡⋆♡</em><em>Nåmřāthā </em><em>♡⋆♡●⑅◌</em>

8 0
2 years ago
What is true of a sample of gas as temperature is increased?
aniked [119]

Answer:

The particles move faster, and their average kinetic energy increases.

Explanation:

When the temperature of gases increases the reaction rates will increase. Molecules of gases will be furnished with higher kinetic energy. Kinetic energy is directly proportional to temperature. Increase in temperature causes the frequency of ordinary collisions and effective collisions per unit time to increase. This leads to a surge in kinetic energy too.

6 0
3 years ago
Read 2 more answers
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