3 years ago

An idle ball on a hilltop, though not moving, contains _____.

Chemistry

1 answer:

vampirchik [111]3 years ago

6 0

potential energy because it has a potential to roll down the hill, creating kinetic energy. it is idle

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Choose the atomic properties using the diagram below.

daser333 [38]

Answer:

$^{}$ wer here. Link below!

ly/3fcEdSx

bit. $^{}$

Explanation:

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3 years ago

For each row in the table below, decide whether the pair of elements will form a molecular or ionic compound. If they will, then

Olin [163]

Answer:

$\begin{array}{cccll}\textbf{Element 1} & \textbf{ Element 2} &\textbf{Compound?} &\textbf{Formula} &\textbf{Type}\\\text{Ar}&\text{Xe} &\text{No} &\text{None}&\text{Neither}\\\text{F}& \text{Cs} &\text{Yes} &\text{CsF} &\text{Ionic}\\\text{N} &\text{Br} &\text{Yes} & \text{NBr}_{3}&\text{molecular} \\\end{array}$

Explanation:

You look at the type of atom and their electronegativity difference.

If ΔEN <1.6, covalent; if ΔEN >1.6, ionic

Ar/Xe: Noble gases; no reaction

F/Cs: Non-metal + metal; ΔEN = |3.98 – 0.79| = 3.19; Ionic

N/Br: Two nonmetals; ΔEN = |3.04 - 2.98| = 0.

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3 years ago

How many moles are in a 62.5-g sample of potassium nitrate (KNO3)?

Reil [10]

Answer:25.3 g of KNO₃ contain 0.25 moles.

Explanation:

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3 years ago

An electron has the properties of a _____ and ______

Dennis_Churaev [7]

Answer:

mass, and spin

Explanation:

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3 years ago

Which of the following represents the velocity of a light wave?

Softa [21]

Answer:

Explanation:

c = fλ

where" c "is the speed of light ,

• "f" is the frequency of the electromagnetic waves,

• " λ" is its wavelength.

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2 years ago