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Serjik [45]
2 years ago
13

GIVING OUT BRAINLIEST

Chemistry
2 answers:
Luba_88 [7]2 years ago
5 0
In a longitudinal wave, the energy moves in the same direction as the motion of the wave (parallel). The greater the amplitude, the greater the energy.
Therefore, the answer is:
It decreases and is parallel to the motion of the wave.
d1i1m1o1n [39]2 years ago
4 0

Answer:

it increases and is perpendicular to the motion of the wave.

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When electricity flows through water, the water molecules split into molecules of hydrogen and oxygen gas. How many oxygen (O2)
ikadub [295]
That would be one oxygen molecule.
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3 years ago
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At equilibrium, Keq for the following reaction is equal to 3.5: SO2 + NO20 È SO3 + NO a) Is a beaker containing 2.5 M SO2, 2.0 M
liraira [26]
Keq=[SO3][SO2] /[SO2][NO2]
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Special characteristics of metals, like being shiny, are called A Descriptions B Phrases C Qualities D Properties
slega [8]
Answer:
d properties
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8 0
3 years ago
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Hydrogen 3 has a half life of 12.32 years a sample of h-3 weighing 3.02 grams is left for 15.0 years what will the final weight
yawa3891 [41]

Answer:

The final mass of sample is 1.3 g.

Explanation:

Given data:

Half life of H-3 = 12.32 years

Amount left for 15.0 years = 3.02 g

Final amount = ?

Solution:

First all we will calculate the decay constant.

t₁/₂ = ln² /k

t₁/₂ =12.32 years

12.32 y =  ln² /k

k = ln²/12.32 y

k = 0.05626 y⁻¹

Now we will find the original amount:

ln (A°/A) = Kt

ln (3.02 g/ A) = 0.05626 y⁻¹ × 15.0 y

ln (3.02 g/ A) = 0.8439

3.02 g/ A = e⁰°⁸⁴³⁹

3.02 g/ A = 2.33

A = 3.02 g/ 2.33

A = 1.3 g

The final mass of sample is 1.3 g.

8 0
3 years ago
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What is the mass of 2.49 cm of aluminum? The density of aluminum is 2.70 g/cm.
OverLord2011 [107]

Answer:

6.723

Explanation:

2.49*2.70

5 0
3 years ago
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