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3 years ago

Why do you think fish bowl above is considered a system but an empty fish bowl is not

1 answer:

7 0

A fish bowl can be described as an open system. It contains several types of matter that are interacting with one another. In this type of open system, matter can enter from the surroundings and matter can escape to the surroundings. However, an empty fish bowl has no matter present to enter or escape to the surroundings. Therefore, an empty fish bowl is not a system.

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FeS + ….HNO3 …….……..+ ….H2SO4 + ….NO + ……….

Ivenika [448]

Answer:

hey it's mistake in the question please check it

4 0

3 years ago

What species is reduced in the reaction below?

lesya692 [45]

Answer: The correct option is D) $Ag^+$

Explanation:

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when oxidation number of a species decreases.

For the given chemical reaction:

$Zn^0+2Ag^+\rightarrow Zn^{2+}+2Ag^0$

On the reactant side:

Oxidation number of Zn = 0

Oxidation number of Ag = +1

On the product side:

Oxidation number of Zn = +2

Oxidation number of Ag = 0

As the oxidation number of Ag is decreasing from +1 to 0. Thus, $Ag^+$ is getting reduced.

Hence, the correct option is D) $Ag^+$

5 0

3 years ago

What is the volume of 90.0 grams of ether if the density of ether is 0.70 g/mL?

Mekhanik [1.2K]

Answer:

b) 1.3 E2 mL

Explanation:

density = mass / volume

∴ m = 90.0 g

∴ density = 0.70 g/mL

⇒ V = m / d

⇒ V = 90.0g / 0.70 g/mL

⇒ V = 128.571 mL

⇒ V = 1.285 E2 mL ≅ 1,3 E2 mL

3 0

3 years ago

Ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg

Tpy6a [65]

Answer:

gggg good one

Explanation:

6 0

3 years ago

A sample of rainwater is tested with the indicator bromothymol blue and it turns yellow. What is most likely PH of rainwater? 4,

kirill [66]

Answer:

Explanation:

bromothymol blue turns yellow betwwen then pH levels of 2 and 6

7 0

4 years ago