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yan
7 days ago
12

Compare the appearance and pH of the unfiltered and filtered polluted water. What conclusion can be made based on these observat

ions?
Chemistry
2 answers:
lorasvet [2.6K]7 days ago
6 0
The unfiltered contaminated water appears murky and has a yellow tint. In contrast, the filtered contaminated water is clearer but retains a slight yellow hue. The pH levels exceed the threshold that is suitable for organism growth. Therefore, I can deduce that water that looks clean might still be unsafe or unsuitable for living beings.
lions [2.7K]7 days ago
6 0

Response:

Unfiltered polluted water appears unclear and has a yellowish tint. The filtered polluted water is clear, albeit with a slight yellow hue. The pH levels exceed the tolerable range for organism survival. From these observations, it can be inferred that even if water seems clean, it may not be safe and could still pose risks to living organisms.

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Claire is investigating potential and kinetic energy using a large ball. For her investigation, Claire will stand at the top of
alisha [2865]
As the ball descends down the hill, its potential energy diminishes while its kinetic energy rises.

The ball's potential energy will decrease as it moves down the slope, and its kinetic energy will experience an increase.

Kinetic energy refers to the energy possessed by an object in motion.

K. E = \frac{1}{2} m v²

where m is the mass of the ball

and v represents the ball's velocity.

Potential energy is the energy associated with an object's position as it traverses down a slope, expressed as:

P.E = mgh

with m as the mass of the ball,

g as gravitational acceleration, and h as the height.

It is clear that as the object descends, its height decreases, while its velocity increases.

learn more:

Potential energy

3 0
10 days ago
Global Precipitation Measurement (GPM) is a tool scientists use to forecast weather. Which statements describe GPM? Select three
Anarel [2728]

Answer:

This is a satellite that gathers information on rainfall and snow.

• Its orbit spans 90 percent of the Earth's surface.

• The sensors detect microwaves.

Explanation:

Right on track

4 0
9 days ago
Read 2 more answers
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of xef2. enter the number of b
KiRa [2857]

Result: The count of bonding electrons and non-bonding electrons amounts to (4, 18).

Explanation:

The Lewis-dot structure reveals the number of bonding and non-bonding electrons in XeF_2.

Lewis-dot representation: It illustrates the valence electron count for atoms in a molecule and shows how they bond, as well as any lone pairs of electrons.

In this structure, 'Xe' is the central atom while 'F' is the terminal atom.

Xenon comprises 8 valence electrons, whereas fluorine contains 7.

The total number of valence electrons in XeF_2 is calculated as 8 + 2(7) = 22 electrons

From the Lewis-dot structure, we can determine

The count of electrons involved in bonding = 4

The count of electrons involved in non-bonding (lone-pairs) = 22 - 4 = 18

Thus, the bonding and non-bonding electron counts are (4, 18).

Below is the Lewis-dot structure for XeF_2.

4 0
12 days ago
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A sample of the chiral molecule limonene is 62% enantiopure. what percentage of each enantiomer is present? what is the percent
alisha [2865]

The composition consists of 62 % one isomer and 38 % its enantiomer.

Assuming that the mixture comprises 62 % of the (R)-isomer.

Then the percentage of the (S) is calculated as 100 % - 62 % = 38 %.

Enantiomeric excess = %  (R) - % (S) = 62 % - 38 % = 24 %.


6 0
1 month ago
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If the following elements were to form ions, they would attain the same number of electrons as which noble gas? As , Be , O , S
Alekssandra [2891]

Answer;

As and Sr ------- [Kr]

Be ------------- [He]

O and Mg ------- [Ne]

S and Ca ------- [Ar]

Explanation

  • The Be+ ion has 2 electrons, matching He. The Mg2+ and O2− ions possess 10 electrons each, like Ne.
  • S2− and Ca2+ ions each have 18 electrons, the same as Ar. The As3− and Sr+ ions hold 36 electrons, paralleling Kr.
  • Elements gain or lose electrons to reach a stable electron configuration akin to that of noble gases.
  • When atoms lose electrons, they form positive ions (cations), and when they gain electrons, they form negative ions (anions).
4 0
1 month ago
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