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svetlana [45]
3 years ago
10

A student had a sample of pure water, and added an unknown substance to it. The student noticed that the hydroxide ion concentra

tion in the solution increased as the substance was added. What is true about this newly formed solution?
It is basic
It is acidic.
It is a buffer
It has a pH of 7.
Chemistry
2 answers:
Nata [24]3 years ago
8 0

Answer:

it is basic.

Explanation:

i just took the quiz

steposvetlana [31]3 years ago
6 0
The answer is A it's a basic because once you add another substance to a neutral it either becomes acidic or basic. this one becomes basic because the hydroxide ion concentrate increased.
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The planet Mercury takes 176 days to do one spin around its pole. Compared to the Earth,
Tanya [424]

Answer:

The sun would appear to move more slowly across Mercury's sky.

Explanation:

This is because, the time it takes to do one spin or revolution on Mercury is 176 days (which is its period), whereas, the time it takes to do one spin or revolution on the Earth is 1 day.

Since the angular speed ω = 2π/T where T = period

So on  Mercury, T' = 176days = 176 days × 24 hr/day × 60 min/hr × 60 s/min = ‭15,206,400‬ s

So, ω' = 2π/T'

= 2π/15,206,400‬ s

= 4.132 × 10⁻⁷ rad/s

So on  Earth, T" = 1 day = 1 day × 24 hr/day × 60 min/hr × 60 s/min = ‭‭86,400‬ s

So, ω" = 2π/T"

= 2π/86,400‬ s

= 7.272 × 10⁻⁵ rad/s

Since ω' = 4.132 × 10⁻⁷ rad/s << ω" = 7.272 × 10⁻⁵ rad/s, <u>the sun would appear to move more slowly across Mercury's sky.</u>

4 0
3 years ago
Choose all the answers that apply. What do all cells do? reproduce contain hereditary information have a nucleus break down food
Travka [436]

Answer:

contain hereditary information

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Explanation:

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5 0
3 years ago
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Aliun [14]

Answer:

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Explanation:

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2 years ago
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kogti [31]

Answer:

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Explanation:

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denpristay [2]
0.136 C02 would be your answer
5 0
4 years ago
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