A solution that is a 4 on pH scale is a

Answers

Answer 1

Answer: a pH scale runs from 1 to 14 with 7 being neutral.

1-6 has base like properties
8-14 has avid line properties

since this solution has a pH scale of 4.... the solution is basic

Answer 2

Answer: A solution that is 4 on pH scale is an acid. A pH scale is used to measure whether a solution is an acid or a base. the pH scale is numbered between 0 to 14. 7 is the neutral point of this scale. Any solution having a pH of 7 is a neutral solution. Acidity of a solution increases as the reading in the scale decreases from seven towards zero. The basic nature of the solution increases as the pH level of the solution increases from 7 towards 14. The acidic nature of a solution having pH value of 3 is ten times more acidic than a solution having pH value of 4. The same thing is same while comparing basic solutions as well.

Related Questions

Which best represents the reaction of calcium and zinc carbonate (znco3) to form calcium carbonate (caco3) and zinc?
Suggest two ways to liquefy the gases.
If 7.84 × 107 J of energy is released from a fusion reaction, what amount of mass in kilograms would be lost? Recall that c = 3 × 108 m/s.
Find the normality of a solution containing 20g of H2SO4(sulfuric acid) per 500ml of solution. The molar mass of H2SO4 is 98 g/eq. H2SO4 has two replaceable H+.
Calculate the molarity (M) of 1.5 L solution of todium nitrate (NaNO3) containing 61.2 g of NaNO3

Find the mass of 3.00 mol of acetic acid, C2H4O2.

Answers

Molar mass

C₂H₄O₂ = 60.0 g/mol

n = mass / molar mass

3.00 = mass / 60.0

m = 3.00 * 60.0

m = 180 g of C₂H₄O₂

hope this helps!

Why is cellulose so difficult for most animals to digest? A)           they don’t have the proper enzyme to break the bonds between subunits
                B)            cellulose is made up of chitin, which is indigestible
                C)            the bonds holding cellulose subunits together are extremely strong, stronger than in any other macromolecule
                D)           there are many hydrogen bonds holding the subunits together

Answers

The answer is C .Cellulose is a long chain of glucose and to be able to use any of the energy stored in them an organism must break it down into single glucose molecules, and this is why most animals go for a different diet. The chain is very difficult to break down and must be treated with concentrated acids at high temperature. This is a hard task to do and often time needs many stomachs.

Cellulose is so difficult for most animals to digest because they don’t have the proper enzyme to break the bonds between subunits.

Further explanation

Cellulose

It is a polysaccharide compound which is difficult to be digested by animals because they don’t have the enzyme needed to break it. It has many monosaccharide molecules bind together by glycosidic bond.

Glycosidic bond

It is a covalent bond. It is formed between two monosaccharide with the removal of one water molecule. It is of two types, Alpha (between C-1 of one monosaccharide and C-2 of other monosaccharide) and beta (also between the C-1 of one monosaccharide and C-2 of another monosaccharide). Enzymes are required for breakdown of cellulose. In our body various enzymes are present for the breakdown of carbohydrates but these enzymes can never digest cellulose. Our enzymes are unable to break beta glycosidic bond but they can break the alpha glycosidic bond. A bond is present in glycogen and starch so these can be digested by human beings. It is thought that such enzymes are produced by vermiform appendix. In herbivores the enzymes which are required for the breakdown of cellulose are present in their digestive tracts so they can digest cellulose.

Animal which can digest cellulose

Grazing animals like cattle can digest cellulose because they have symbiotic bacteria in their intestine and these bacteria hep them in digestion because of special enzymes in them.

Answer details

Subject: Chemistry

Level: High school

Keywords

Cellulose
Glycosidic bond
Animal which can digest cellulose

Learn more to evaluate

brainly.com/question/10885719

brainly.com/question/5031462

The enthalpy of a system is the same as its:A. specific heat.
B. heat of reaction.
C. heat of combustion.
D. heat content.

Answers

The answer for above statement:

D. heat content.

Explanation:

Enthalpy is a measure of the total energy of a thermodynamic system. It includes the internal energy, which is the energy required to create a system, and the amount of energy required to make room for it by displacing its environment and establishing its volume and pressure.

Heat content - (thermodynamics) a physical science amount adequate the interior energy of a system and the merchandise of its volume and pressure.

Ans D) heat content

Enthalpy (H) is a thermodynamic state function which according to the first law of thermodynamics is a sum of internal energy (E) and the pressure- volume (PV) work.

i.e. H = E + PV

Thus, enthalpy is the total heat content of a system which includes contributions from both kinetic and potential energy.

A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solution. How could you prepare the solution needed for the lab experiment? show all work to find your answer

Answers

Answer: The volume of stock HCl solution required to make laboratory solution will be 0.25L

Explanation:

To calculate the volume of stock solution required to make the laboratory solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of stock solution.

$M_2\text{ and }V_2$ are the molarity and volume of laboratory solution.

We are given:

$M_1=12M\nV_1=?L\nM_2=1.5M\nV_2=2L$

Putting values in above equation, we get:

$12* V_1=1.5* 2\n\nV_1=0.25L$

Hence, the volume of stock HCl solution required to make laboratory solution will be 0.25L

The amount of the solute is constant during dilution. So the mole number of HCl is 2*1.5=3 mole. The volume of HCl stock is 3/12=0.25 L. So using 0.25 L stock solution and dilute to 2.0 L.

What would be a simple way to prevent erosion

Answers

There are many simple ways to prevent erosion. One of the simplest forms of preventing erosion is with vegetation and by establishing root systems that hold the soil together. You can also use geotextiles, fertilizers and also build retainer walls to keep the soil intact and prevent erosion.

What volume of carbon dioxide is produced when 0.489 mol of calcium carbonate reacts completely according to the following reaction at 0°C and 1 atm? calcium carbonate ( s ) calcium oxide ( s ) + carbon dioxide ( g )