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2 years ago

CAN SOMEONE ANSWER ME!! 5-6

Chemistry

1 answer:

docker41 [41]2 years ago

7 0

Answer:

As the axial tilt increases, then the seasonal contrast increases so that winters are colder and summers are warmer in both hemispheres. The northern hemisphere is tipped away from the Sun, producing short days and a low sun angle. What kind of effect does the earth's tilt and subsequent seasons have on our length of daylight (defined as sunrise to sunset). Over the equator, the answer is not much.

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How do you know a physical change has occurred when evaporating water produces gaseous water?

levacccp [35]

Answer:

Its b its the state not anything else

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3 years ago

A typical coffee mug holds about 355,000 microliters of liquid. How many kiloliters of liquid does this mug hold expressed in st

skad [1K]

Answer:

$3.55\times 10^{-4}\ kL$

Explanation:

Given that,

A typical coffee mug holds about 355,000 microliters of liquid.

$1\ \mu L=10^{-6}\ L$

Also, 1 L = 0.001 kL

$10^{-6}\ L=0.001\times 10^{-6}\ kL\\\\=10^{-9}\ kL$

So, a typical coffee mug holds about $355000 \times 10^{-9}\ kL$ or $0.000355\ kL$ of liquid.

We need to convert it into Scientific notation.

We will shift 4 zeros to right. As a result,

$V=3.55\times 10^{-4}\ kL$

So, the mug will hold $3.55\times 10^{-4}\ kL$ of liquid.

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3 years ago

Does anyone know why electron affinity increases as going upward in the periodic table

kobusy [5.1K]

Answer:

Electron affinity increases upward for the groups and from left to right across periods of a periodic table because the electrons added to energy levels become closer to the nucleus, thus a stronger attraction between the nucleus and its electrons.

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3 years ago

How are journals helpful to scientists

Fofino [41]

They help keep track of notes and experaments

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3 years ago

Which of the following are oxidation half-reactions?

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The answer is the third choice because is oxidation half reactions, only the oxidation state of the reducing agent changes; in this third choice, Fe2+ is oxidized and becomes Fe3+. Just keep in mind that half reactions usually include the change in electrons:

Fe2+ -> Fe3+ +e-<span />

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3 years ago