The question and options are below {the attachment}
I don't have much time, so please help me!
TIME REMAINING
36:00

Answer:

I can't see picture sorry

Answer: 9L

Explanation:

(6 x 300) = 1800 / 200 = 9

Answer:

1) If the hydrogen ion concentration of a solution is 10–10M, is the solution is definitely  alkaline. The thing I used to determine that fact is basic point  - pH above 7 is always alkaine, and as a proof we can see from the task that the concentration of hydroxyl OH- is pretty higher than hydrogen H+, which is a direct charachteristic of alkain solution.

Explanation:Here is a tip for you, I bet it will be useful :

>7 = basic

<7 = acidic

7 = neutral

Answer:

D. Nal

Explanation:

Took a K12 test and it was correct! :3 Hope this helps!

Answer:

4L

Explanation:

A) Sodium and chlorine forming salt, in this reaction salt is a new product with different properties than sodium or chlorine

Therefore it is a chemical reaction

B) A candle burning to form carbon dioxide, in this reaction carbon dioxide is a new product with different properties than the candles wax

Therefore it is a chemical reaction

C) Marshmallow releasing carbon is similar to the above one

Therefore it is a chemical reaction

D) Ice turning into water, in this reaction the water can be transformed into ice by freezing it

Therefore it is not a chemical reaction

The answer to your question is D) Ice turning into water

Happy to help :)

If you need anymore help, feel free to ask

The comparison of the results obtained from the experimental and the control groups validates the conclusions of the experiment.

The question is incomplete but I will, try to help you the much I can. The term experimental groups refer to the group that recieves the treatment while the control group is the group that did not receieve the treatment.

Hence, the comparison of the results obtained from the experimental and the control groups validates the conclusions of the experiment.

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Answer:

The experimental group consists of quadrats numbered

✔ 1 to 16 or A

.

The control group consists of quadrats numbered

✔ 17 to 32 or B

.

Explanation:

Answer: It would take 300 light years to reach Earth.

Explanation:

Answer: Open system

Explanation:

I guessed and I got the right answer

Answer:

They found the rats near or in a lake or river, due to high concentration of nitrogen in their body.

CH₄ + 2O₂ = CO₂ + 2H₂O

Answer: 16.32 g of [tex]O_2[/tex] as excess reagent are left.

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} SO_2=\frac{21.71g}{64g/mol}=0.34mol[/tex]

[tex]\text{Moles of} O_2=\frac{21.71g}{32g/mol}=0.68mol[/tex]

[tex]2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)[/tex]  

According to stoichiometry :

2 moles of [tex]SO_2[/tex] require = 1 mole of [tex]O_2[/tex]

Thus 0.34 moles of [tex]SO_2[/tex] will require=[tex]\frac{1}{2}\times 0.34=0.17moles[/tex]  of [tex]O_2[/tex]

Thus [tex]SO_2[/tex] is the limiting reagent as it limits the formation of product and [tex]O_2[/tex] is the excess reagent.

Moles of [tex]O_2[/tex] left = (0.68-0.17) mol = 0.51 mol

Mass of [tex]O_2=moles\times {\text {Molar mass}}=0.51moles\times 32g/mol=16.32g[/tex]

Thus 16.32 g of [tex]O_2[/tex] as excess reagent are left.

Answer:

A

Explanation:

on edge

Answer:

The answer is a

Explanation:

Answer:

The nucleus is surrounded by the endoplasmic reticulum, which is covered in spots by ribosomes.

Explanation:

When the animal cell divides, the nucleus breaks up, and the nuclear envelope falls apart.

Solution equilibrium is the physical state in which the opposing processes of dissolution and crystallization of a solute occur at equal rates.

Answer:

See Explanation

Explanation:

i) The equation of the dissolution of BF2 is;

BaF2(s)⇄Ba2+(aq)+2F-(aq)

ii) Ksp =[Ba2+]  [2F-]^2

iii) Let the concentration/solubility of [Ba2+] and [2F-] be x

Ksp = [x] [2x]^2

Ksp = 4x^3

iv) x =∛Ksp/4

Answer:

83 mL

Explanation:

Use the dilution equation M1V1 = M2V2

M1 = 18 M

V1 = ?

M2 = 6.0 M

M2 = 250 mL

Solve for V1 --> V1 = M2V2/M1

V1 = (6.0 M)(250 mL) / (18 M) = 83 mL

Scientists decided that Pluto are more in common with than the original 8 planets of the solar system will be the other, newly discovered, dwarf planets. Option A is correct.

In 2006, scientists redefined the definition of a planet, leading to the reclassification of Pluto as a dwarf planet. This decision was influenced by the discovery of other celestial bodies in the outer regions of the solar system that shared similar characteristics with Pluto.

The other, newly discovered, dwarf planets" is correct. Scientists recognized that there were other objects in the solar system, such as Eris, Haumea, Makemake, and Ceres, that shared similar characteristics with Pluto and were classified as dwarf planets alongside Pluto.

This reclassification highlighted the presence of a population of objects in the outer regions of the solar system known as the Kuiper Belt, which consists of numerous icy bodies similar to Pluto. By considering the properties and characteristics of these newly discovered dwarf planets, scientists concluded that Pluto had more in common with these objects than with the original eight planets of the solar system.

The moon and the asteroids are not accurate. While the moon and asteroids are significant celestial objects in the solar system, they do not represent the specific group of objects that are considered dwarf planets and have characteristics similar to Pluto.

Hence, A. is the correct option.

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Answer:

The sun or producers.

Answer:

[H]=10^-4 when ph=4 higher

[H]=10^-5 when ph =5 lower

Explanation:

brains

Answer: As4010 is the Molecular Formula of Arsenic oxide. its Molecular Weight is 459.68.

hope its help you

have a great day keep smiling be happy stay safe.

Answer:

Cr (NO2) 2

Explanation:

................

Answer:

1 oxygen

Explanation:

cause H2O= two hydrogen + one oxyge

oh wait i wrote whole paragraphs let me fix this

okay so you mean this ?

a term for disaccharides would be double sugar or boise!

monosaccharides are simple sugars soluble in water. any class of sugars like glucose.

polysaccharide is starch, cellulose, or glycogen. with molecules together. a carbohydrate.

saccharide knows as to the term structure of carbohydrates. carbohydrates are plain simple? organic compounds that are aldehyde or ketone functional group. with the general chemical formula of carbohydrates is c (H O)

n. 2. n

To solve this we must be knowing each and every concept related to monosaccharide, polysaccharide and disaccharide. Therefore, monosaccharide is the term which  describes the given sugar.

Sugar is the generic term for a variety of sweet-tasting, soluble sugars, many of which are utilized in food. Glucose, galactose, and fructose are examples of simple sugars, often known as monosaccharides.

Disaccharides comprise sugars (carbohydrate compounds) created when two simple sugars, or monosaccharides, combine to create a disaccharide.

Polysaccharides, also known as polycarbohydrates, are among the most common carbohydrates present in foods. They are polymeric long-chain carbohydrates made up of monosaccharide units linked together by glycosidic bonds.

Therefore, monosaccharide is the term which  describes the given sugar.

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Answer:

rotation around its north-south axis. 

Answer:

Question is unclear

Explanation:

Answer:

what ru asking dear??? write question properly ??? Write the correct question from next time.