PLEASE HELP "Which of the following substances would have the lower concentration of hydrogen ions ?"

Answer:

12, basic, 9, basic

Explanation:

pH = -log[H+]

Using the data in the table, you can calculate the pH:

-log[1e-12] = 12

-log[1e-9] = 9

To find out whether it is acidic, basic, or neutral, use a pH scale. Anything less than 7 is acidic, anything over is basic. Knowing this, both will be basic.

Answer:

Milk Chocolate

Explanation:

Some chocolates contain lots of sugar, but for Dark chocolate its healthy

Answer:

Milk chocolate the bad side of chocolate is getting fat

Explanation:

have u ever tried shreks snickers before?

Answer:

18.32L

Explanation:

sana makatulong

Lithium is atomic number 3, so it has valency 1

While, Bromine is atomic number 35, and has valency 1

Lithium has an extra electron while Bromine need an electron, since they both need and have one electron, the form

LiBr (Lithium Bromide) where Li is +ve charged and Br is -ve charged

Happy to help :)

Answer:

they regulate the amount of water in the body.

Explanation:

The kidneys help maintain homeostasis by regulating the concentration and volume of body fluids. For example, the amount of H+ and HCO3 - secreted by the kidneys controls the body's pH.

Answer:

A

Explanation:

physical property of matter

- no chemical reaction involved

- involves the measurements of mass and density

Answer:

I was looking for this same answer.

Explanation:

If the [H₃O⁺] of a solution is less than the [OH⁻], then the solution would have a higher pH than its pOH.

pOH is define as the negative logarithm of the concentration of OH⁻ ion and for a basic solution its value should be less than 7.

In the question it is clear that concentration of H⁺ ion is les than the concentration of OH⁻ ion, so the given solution is basic in nature. Basicity of basic solution is calculated by using the pOH scale and for this solution value of pOH is less than 7, because more than 7 shows the acidic character. And according to the pH scale value of this solution should be more than 7.

Hence, option (A) is correct i.e. The solution would have a higher pH than its pOH.

To know more about pOH scale, visit the below link:
https://brainly.com/question/854299

Answer:

less carbon dioxide can be dissolved in the ocean.

Explanation:

Answer:Sulfur

Hope this helps!

Explanation:

Answer:

Energy

Explanation:

As waves move from one place to another, they carry energy. Generally, the medium itself doesn't move much as it is the disturbance that is being transmitted

Answer:

energy because a wave isnt like a physical thing so it isnt gonna have matter or particles or molecules its just a movement of energy like a sound wave has no matter so it doesnt have particles and stuff

Explanation:

i know i sound very scientific XD

Answer:

Dominant traits are always expressed when the connected allele is dominant, even if only one copy exists. Recessive traits are expressed only if both the connected alleles are recessive.

Explanation:

Freckles, cleft chin and dimples are all examples of a dominant trait.

Answer:

A hot air balloon taking off

Explanation:

Answer:

Shape of the enzyme and its active site

Explanation:

Answer:

4046atm

Explanation:

For this question you can use the ideal gas law,

[tex]PV=nRT[/tex]

Where P is pressure, V is volume, n is moles of substance, R is the constant, and T is the temperature.

Because of the units given, R will equal .08026[tex]P=4046 atm[/tex]

[tex]P=\frac{nRT}{V}[/tex]

Then, plug in the values (I'll be excluding units for simplicity, but they all cancel out for pressure in atm):

[tex]P=\frac{(730)(.08206)(304)}{4.5}[/tex]

This will give you:

[tex]P=4046atm[/tex]

Answer:

The answer is Na2CO3.Option a

Answer:

0.o75 mol Ti = 4.5x10∧22

2.10 mol CO2 = 1.26x10∧24 molecules

               hope this helped

Answer:

When a substance changes states, it requires energy when it goes to a higher energy state and releases energy when it goes to a lower energy state. Gas has a higher energy than liquid and liquid has a higher energy than solid. The three state changes from a lower energy to a higher energy are: solid to liquid: fusion. liquid to gas: vaporization

The galaxy is the component of the universe which  contains all of the other components and would have the greatest mass.

A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity.The word is derived from the Greek galaxias , literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars,each orbiting its galaxy's center of mass.

Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.

Learn more about galaxy,here:

https://brainly.com/question/8628958

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Answer:

Subscript

Explanation:

The little number you see to the right of the symbol for an element is called a subscript. That number indicates the number of atoms of that element present in the compound. When balancing an equation, you can change the coefficients but not the subscripts.

hope this helps! if not, it's got to be coefficient or equation

Answer:

D. +3

Explanation:

have a wonderful day!!

Answer:

Image result for What does the nucleus of the cell control?

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.

Explanation:

Answer:

Life functions

Explanation:

hope this helps <3

Answer:

–1065.25 KJ of energy.

Explanation:

From the question given above, the following data were obtained:

4FeO + O₂ —> 2Fe₂O₃  ΔH = –560.66 kJ

From the balanced equation above,

The formation of 2 moles of Fe₂O₃ released –560.66 kJ of energy.

Finally, we shall determine the amount of heat energy released when 3.8 moles of Fe₂O₃ are produced. This can be obtained as follow:

From the balanced equation above,

The formation of 2 moles of Fe₂O₃ released –560.66 kJ of energy.

Therefore, the formation of 3.8 moles of Fe₂O₃ will release

= (3.8 × –560.66)/2 = –1065.25 KJ of energy.

Thus, –1065.25 KJ of energy is released from the reaction.

Answer:elementary substance

Explanation:

Answer:

c on edg

Explanation:

i dont know for sure so sorry if i am wrong.

and have a good day <3

ROW - ( 3 ) is correct

SYSTEM (A)

Respiratory system - here gaseous exchange takes place.

SYSTEM (B)

Digestive system - here nutrients from food is absorbed and assimilated .

SYSTEM (C)

Excretory system - removal of waste occurs

Answer:

B. Chemical changes produce new substances; physical changes do not.

Explanation:

Physical changes only alter appearances, while chemical changes are interactions that create new chemical formulas.