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Semmy [17]
3 years ago
5

The symbol for the hydroxide ion is _____. H + H 3O - H(OH) OH -

Chemistry
2 answers:
erastova [34]3 years ago
8 0
Your answer is D, OH-.
Nutka1998 [239]3 years ago
4 0
Your answer is D OH-
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Match the following ​
Ket [755]

Answer:

Ai --> Bii

Aii --> Bi

Aiii --> Bv

Aiv --> Biii

Av --> Biv

Explanation:

For Ai, naphthalene sublimes directly from a solid to gas when heated at around 80 degree Celsius.

For Aii, Ozone has a molecular formula of O₃.

For Aiii, weeds are normally considered as "unwanted" plants. Many people may consider using herbicides to clear the weeds in their gardens.

For Aiv, filtration is a physical method for separating solid and liquid from a mixture. A filter paper is normally used, in which the complex structure of the paper only allows fluid to pass through it, but not the solid ones. The solid left behind on the filter paper is called "residue".

For Av, photosynthesis is a chemical reaction that occurs in the leaves of a plant, which produces food for plants to survive. Carbon dioxide, water and light are required for photosynthesis to take place.

4 0
2 years ago
1.0 x 10^2 m what is the frequency of the waves
MAVERICK [17]

Answer:

f = 3 × 10⁶ Hz

Explanation:

Given data:

Wavelength of wave = 1.0 ×10² m

Frequency = ?

Solution:

Formula:

Speed of light = wavelength× frequency

Frequency = speed of light / wavelength

speed of light = 3× 10⁸ m/s

f = 3× 10⁸ m/s / 1.0 ×10² m

f = 3 × 10⁶ s⁻¹

s⁻¹ = Hz

f = 3 × 10⁶ Hz

8 0
3 years ago
What causes the appearance of lines in an emission spectrum?
Nikitich [7]

Answer:

key concepts and summary. When electrons move from a higher energy level to a lower one, photons are emitted, and an emission line can be seen in the spectrum. Absorption lines are seen when electrons absorb photons and move to higher energy levels

Explanation:

thank me later

pls be brainlest

3 0
3 years ago
Who made the periodic table?
swat32
Nobody specifically made the periodic table but it was first thought of by Dmitri Mendeleev in 1869.
7 0
3 years ago
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25.4 g of salt was dissolved in distilled water to make 425 mL of solution.
ladessa [460]
Use 25.4 g/ 425ml x 100 5.94 percent
3 0
3 years ago
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