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Nostrana [21]
3 years ago
13

A student performs the follow experiment.Step 1: she pours a colorless solution into a beaker that contains another colorless li

quid. Yellow particles appear in the liquid Step 2: she lets the yellow particles settle in the beaker and then deprecated the colorless liquid by recantation. Which has most likely occurred in the beaker?
Chemistry
2 answers:
omeli [17]3 years ago
4 0

Answer:

A chemical change in 1 step and a physical change in 2 step.

Explanation:

In the first step, when the student poured colorless solution into the another liquid, yellow particles appeared which means that there is some chemical reaction which has taken place.

In the step 2,  when these yellow colored particles precipitate settled, a colorless liquid at top is left,  so, this is a physical change because no new substance was produced and through the recantation it was removed.

Katen [24]3 years ago
3 0

Answer:

The answer is (A) peeps.

Explanation:

Got a 100% on the quiz

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sineoko [7]

Answer:

I wanna say c

Explanation:

It makes the most sense, because non-metals don't produce an electrical current, and therefore aren't conductors.

5 0
2 years ago
What happens when carbon dioxide gas is cooled to -78 degree Celsius​
katrin2010 [14]

Answer:

At temperatures below −78 °C, carbon dioxide changes directly from a gas to a white solid called dry ice through a process called deposition.

3 0
2 years ago
A force between charged objects
Darya [45]

Answer:

Coulomb's law, mathematical description of the electric force between charged objects. Formulated by the 18th-century French physicist Charles-Augustin de Coulomb, it is analogous to Isaac Newton's law of gravity.

Explanation:

Soo yeah I think this can help you

3 0
3 years ago
Which of the following is NOT a characteristic of stars? A) Size B) temperature C) texture D) color
Lynna [10]

Answer:

C

Explanation:

Characteristics used to classify stars include color, temperature, size, composition, and brightness.

7 0
3 years ago
According to the balanced equation shown below, 1.00 mole of oxalic acid, h2c2o4, reacts with _________ moles of permanganate io
zheka24 [161]
The balanced equation that shows the reaction between oxalic acid and permanganate ion in an acidic medium is: 2MnO4- + 5H2C2O4 + 6H+ -> 2Mn(2+) + 10CO2 + 8H2O. Thus, 1 mole of oxalic acid reacts with 0.4 mole of permanganate ion. This was obtained using stoichiometry:

1 mol H2C2O4 x (2 mol MnO4-/ 5 mol H2C2O4) = 0.4 mol MnO4- 

In this redox reaction, the permanganate is reduced to manganese(II) ion.
6 0
3 years ago
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