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3 years ago

GIVING OUT BRAINLIEST

2 answers:

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]3 years ago

4 0

Answer:

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

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What is a major disadvantage of using solar power? (4 points)

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What was the gas that form in this chemical reaction

Cerrena [4.2K]

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What is the first step in the scientific process?

maxonik [38]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \texttt {Observe a natural phenomenon}$

____________________________________

$\large \tt Explanation \: :$

At first scientists/researchers observe a natural phenomenon. after enough observation, they make predictions why that phenomenon is happening and the reasons that lead to that particular phenomenon. then they generate scientific hypothesis to explain that phenomenon and after getting enough data they develop tests and perform experiments. And check the results they get and at last based on the results they conclude what actually is happening.

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

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2 years ago

Given the two half-reactions, what must be done in the next step before the reaction can be balanced? Au3+ --> Au I- --> I

Artyom0805 [142]

Answer:

The balance equation is

$2Au^{+3} + 6I^{-}$ → $2Au + 3I_{2}$

Explanation:

first, we have to make sure that the atoms are balanced

$Au^{+3}$ → $Au^{}$

$2I^{-}$ → $I_{2}$

then we proceed to balance charges of each half-reaction

$Au^{+3} + 3e^{-}$ → $Au^{}$

$2I^{-}$ → $I_{2}$ $+ 2e^{-}$

Now we multiply the half-reactions to match the number of electrons in each one

( $Au^{+3} + 3e^{-}$ → $Au^{}$ )x2

( $2I^{-}$ → $I_{2}$ $+ 2e^{-}$ )x3

and now we do the sum of the half-reactions

2 $Au^{+3} + 6e^{-}$ → 2 $Au^{}$

$6I^{-}$ → 3 $I_{2}$ $+ 6e^{-}$

$2Au^{+3} + 6I^{-}$ → $2Au + 3I_{2}$

note: the only atom that needed to be balanced was I

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4 years ago

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An isotope of yttrium has 39 protons and 59 neutrons. what is the atomic mass of that isotope?

Charra [1.4K]

We can define atomic mass the total of number of protons and number of neutrons in an atom or isotope.
<span>So when an isotope of yttrium has 39 protons and 59 neutrons, its atomic mass is equal to;
number of protons + number of neutrons = 39 + 59 = 98</span>

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3 years ago