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MaRussiya [10]
3 years ago
10

Question 3

Chemistry
2 answers:
hammer [34]3 years ago
5 0

Answer:

in the excited state

Explanation:

Because in excited state an atom has more energy

SVEN [57.7K]3 years ago
3 0
In the excited state
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Compute the freezing point of this solution:
likoan [24]

Answer:

Freezing point = 1.25

Explanation:

If  we increase the concentration of the solution, the concentration of H+ does not change.

Convert 2.5% in to decimal

2.5%  = 2.5 ÷100

        = 0.025

The freezing point = 0.025 × 50

                               = 1.25

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What is the time required for contamination source
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It can take years to remove all of the harmful substances from the water.

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Water flows over Niagara Falls at the average rate of 2,400,000 kg/s, and the average height of the falls is about 50 m. Knowing
Zinaida [17]

Answer:

1) The power of Niagara Falls is 1.176 × 10⁹ W

2) The number of 15 W LED light bulbs it could power is 78.4 × 10⁶ light bulbs

Explanation:

1) The Niagara falls water mass flow rate = 2,400,000 kg/s

The height of the fall = 50 meters

The gravitational potential energy = Mass (kg) × height (m) × gravity (9.8 m/s²)

The power = The energy converted per second = Mass flow rate (kg/s) × height (m) × gravity (9.8 m/s²)

Therefore;

The power of Niagara Falls= 2,400,000 kg/s × 50 m ×9.8 m/s²= 1.176 × 10⁹ W

The power of Niagara Falls = 1.176 × 10⁹ W

2) The number, n, of 15 W LED light bulbs it could power is given by the relation;

n × 15 W = 1.176 × 10⁹ W

∴ n = 1.176 × 10⁹ W/(15 W) = 78.4 × 10⁶ light bulbs

The number of 15 W LED light bulbs it could power = 78.4 × 10⁶ light bulbs.

6 0
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yawa3891 [41]

Yes, depending on the thickness.

7 0
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Help me please someone help me I’ve been here for hours
mash [69]

Answer:

Eukarya- Multicellar and unicellar

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Fugi- Multicellar

Protista- unicellar

eubacteria- unicellar and have no nucleus

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7 0
3 years ago
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