In the reaction 2H2 + O2 + H20, what coefficient should be placed in front of H2O to balance the reaction? 0 2 03 O 4​

Answer:

y = 2.77 cm

Answer: The third dimension is 2.77 cm

Answer:

Atoms are neutral; they contain the same

samenumber of protons as electrons. By

definition, an ion is an electrically charged

particle produced by either removing

produced by either removingelectrons from a neutral atom to give a

produced by either removingelectrons from a neutral atom to give apositive ion or adding electrons to a neutral atom to give a negative ion.

Answer:

Explanation:

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

Answer:

Relative dating is based on the positions of fossils in rock layers. Lower layers were laid down earlier, so they are assumed to contain older fossils. This gives the fossil an approximate age in years. Absolute dating is often based on the amount of carbon-14 or other radioactive element that remains in a fossil up until extinction.

Relative dating is a method of dating where the geologic events are arranged and the rocks are left behind in a sequence. They function on the basis of the stratigraphy and don't provide us with actual numeric data.

Learn more about the discoveries to explain how the fossil record.

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Answer:

A. 1.3 bison/mi^2

Explanation:

4500 bison divided by 3472 sq miles is 1.3 bison per mile squared.

Answer:

B

Carboxylic acid

Explanation:

I'm not entirely sure, but this should be it

Answer:

Al3+<Mg2+<Na+

Explanation:

this is because of nuclear charge (no. of protons)

atomic radius is inversely proportional to nuclear charge.

Answer:

Because law of momentum, makes it equal

Answer:

carbon because it is the main answer of these

hi <3

graphite is able to conduct electricity because it has delocalised electrons.

explanation:

carbon can bond 4 times, but in graphite it is only bonding to three other carbons, leaving one electron free to carry charge

hope this helps <33

Answer:

m=104000

Explanation:

by 1km=1000m

104km=?

Now

104km=104×1000m

=104000m

Therefore,m=104000 ans

104 kilometers is equal to 104,000 meters.

A conversion factor is a ratio that shows how two different units of measurement relate to each other. You can convert a value from one unit to another by multiplying or dividing the original value by a conversion factor.

For example,

Since there are 1000 meters in a kilometer, we need to multiply the distance in kilometers by 1000 to convert it into meters.

So, to convert 104 kilometers to meters:

104 Km * 1000 = 104,000 meters

Therefore, 104 kilometers is equal to 104,000 meters.

Learn more about conversion factor, here:

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Answer

level 2 to 4

Explanation:

i guessed cause im just that cool

Answer:

A bottle that is sealed would have the highest concentration.

Explanation:

When you put a gas into a container, the concentration or the amount of mol inside the bottle would be highly concentrated. If you open the bottle, the CO2 would spread outwards and leave the bottle giving more room between each molecule. The longer you open the bottle, the less concentrated the gas will be.

my guess answer iss 1/4 if incorrect sorr

1/5 is the dilution of reagent A in water.

Explanation:

       [tex]D.F.=\frac{V_f}{V_i}[/tex]

       Where:

                 D.F = Dilution factor

                 [tex]V_f[/tex] = Final volume of the diluted solution

                 [tex]V_i[/tex]= Initial volume of the undiluted solution

Given:

4 parts of the reagent and 16 parts of water are mixed together to form a diluted solution.

To find:

The dilution of reagent A in water

Solution:

Parts of reagent A =[tex]V_i = 4[/tex]

Parts of water = 16

Final volume of solution = [tex]V _f = 4 + 16 = 20[/tex]

The dilution factor of reagent A:

[tex]D.F=\frac{20}{4}=5[/tex]

The dilution of the reagent A = [tex]1:5=\frac{1}{5}[/tex]

1/5 is the dilution of reagent A in water

Learn more about Dilution here:

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Answer:

How to Convert a Number to Standard Form

Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. ...

Count how many places you moved the decimal point. ...

Write your scientific notation number as a x 10b and read it as "a times 10 to the power of b."

Explanation:

Answer:

Green vitriol- FeSO4·7H2O

white vitriol- ZnSO₄

Answer:

A. > digestive and circulation

B. > digestive and excertory

C. > nervous and muscluar

D.> digestive and circulation

hope this helps !! please make brainlest!

Explanation:

H, He ---------

Li, Be, --,C, F, Ne

Na, Mg, --,Si, Cl, Ar

K, Ca, Cu, Ge, Br, Kr

Rb, Sr, Ag, Sn, I, Xe

Cs, Ba, Au, Pb, At, Rn

Please give brainliest, I spent a lot of effort on this.

We know that the sunscreen preparation contains a 2.7% by mass of Benzyl Salicylate. From this, we will find that they need 1.559 kg of Benzyl Salicylate to make 340 tubes of sunscreen.

The initial data means that if the total mass of sunscreen is M, then the mass of Benzyl Salicylate will be 2.7% of M, or:

(2.7%/100%)*M = 0.027*M

Now, we know that a tube contains 6.0 oz of sunscreen.

Then M = 6.0oz

A tube contains:

0.027*6.0oz = 0.162 oz.

Then in 340 tubes, we will need 340 times 0.162 oz of Benzyl Salicylate, this is:

340* 0.162 oz = 55.08oz

And we want this quantity in kg.

Knowing that:

1oz = 0.028kg

Then 55.08oz is 55.08 times 0.028kg:

55.08*0.028kg = 1.559 kg

So they will need  1.559 kg of Benzyl Salicylate to make 340 tubes of sunscreen.

If you want to learn more, you can read:

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Answer:

it's a property of a cell, tissue and organisms that allows to maintain and regulate the stability and constancy to function properly

Answer:

A

Explanation:

B: not B. Opinions don't matter. Facts do.

C: its a consideration. It will limit the scope of the experiment. But it's not relevant to the investigation. Not C

D: You might want to contact some scientists to see what they think about your investigation, but randomly interviewing anyone and everyone is not the answer.

You want to do A for certain.

Answer:

"The polar regions have long winters and short, cool summers."

Explanation:

Climate is the average of that weather. The climate record also includes extreme values such as record high temperatures or record amounts of rainfall.

For Climate example:

You can expect snow in the Northeast in January or for it to be hot and humid in the Southeast in July.

Answer:

Independant variable

Explanation:

Say you were doing a lab, you wanted to know if fertilizer actually helped a plant grow. The growth of a plant, in this situation, depends on whether you use fertilizer or not. You are changing if you use it or not, so it is the independent variable.  

Answer:

a.

84,791 » 8479

b.

256.75 » 256.8

c.

431,801 » 4318

d.

0.00078100 » 0.0007810

Explanation:

[tex].[/tex]

Answer:

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner part being folded inwards to form layers (cristae).

Explanation:

It is due to low volume of electron that causes large distance between two electrons.

When the added electron goes to smaller quantum level, the repulsive force between two electrons is less because the electron which is added occupies small space due to less volume so there is a large distance between two electrons that leads to less force of repulsion.

If the electron has more volume so it occupies more space and there will more repulsive force between two electrons so that's why we can say that the smaller volume of electron is the reason of less repulsive force.

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Explanation:

Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.