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3 years ago

Which of the following changes depending on the strength of the gravity

Chemistry

2 answers:

Musya8 [376]3 years ago

7 0

Answer:

Weight

Explanation:

Answer via Educere/ Founder's Education

miss Akunina [59]3 years ago

5 0

Answer:

D. Weight

Explanation:

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What kind of a system is a coffee held in a cup??<br><br>don't spam..

bagirrra123 [75]

Answer:

open system

Coffee held in a cup is an open system because it can exchange matter water vapors and energy heat with the surroundings.

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3 years ago

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Which model of the atom was modeled after the solar system? Question 2 options: Dalton's model Thomson's model Rutherford's mode

Marrrta [24]

It's -Bohr's Model- becuase Dalton I dont think did a model. Thomson's was the "Plum Pudding Model." Ernest Rutherford drew one out(I dont know i dont have a model down though) so it the only one left is Dalton's Model which is it. (Hopefuly)

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3 years ago

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Question 5 options: The cell potential for an electrochemical cell with a Zn, Zn2 half-cell and an Al, Al3 half-cell is _____ V.

Mashcka [7]

Answer:

The voltage is $E_{cell} = 0.944 \ V$

Explanation:

Generally the half reaction for Zn, Zn2 half-cell is mathematically represented as

$Zn_{(s)}$ ⇔ $Zn^{2+}_{ (aq)} + 2e^-$ (reference study academy)

and the electric potential for this is a constant value

$E_{zn } = -0.7618 \ V$

Generally the half reaction for Al, Al3 half-cell is mathematically represented as

$Al^{3+} _{(aq)} + 3e^-$ ⇔ $Al_{(s)}$

and the electric potential for this is constant value

$E_{Al } = -1.662 \ V$

Therefore the cell potential for an electrochemical cell is mathematically represented as

$E_{cell} = E_{zn } - E_{Al }$

substituting values

$E_{cell} = -0.718 - (-1.662)$

$E_{cell} = 0.944 \ V$

4 0

3 years ago

When Thomas Edison first sold electricity, he used zinc coulometers to measure charge consumption. (In a coulometer the cathode

IrinaK [193]

Answer:

The answer is " $42537.93 \ C$ ".

Explanation:

Molar mass : $Z_n = 65.38 \ \frac{g}{mol}\\\\$

$\to Zn^{2+} + 2e^{-} = Zn\\\\$

$\therefore\\\\ \to 65.38 \ g \ of\ Z_n \ require: \\\\ \to 2 \times 96500\ C\\\\\to 14.41 \ g\ require,\\\\ \to \frac{(14.41 \times 2 \times 96500)}{65.38} \ \frac{g}{mol} = 42537.93 \ C$

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3 years ago

. ______________ will slow down alcohol absorption. Sleeping well Food in the large intestine Being happy and relaxed Food in th

solong [7]

Answer:

Food in the stomach that is high in protein will dilute absorption of alcohol in your stomach :) therefore always drink with food in your stomach, just drinking alchol without food will have serious consequences on helath.

Explanation:

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3 years ago