Why must a solution of naoh be standardized using a primary standard, such as khp?.

Answers

Answer 1
it can be purchased in very pure form, it is chemically stable so does not breakdown over time or change its chemical composition

Related Questions

Coryell walks 11 km south, and then turns east and walks 13 km. What is his
distance?

Answers

Answer:

its 24 cuz 13 + 11 =24. you're still walking 24 km in all. your going _|

Elements on the right side of the periodic table are called.

Answers

Answer:

Nonmetals is the answer!

Hope this helped!

Answer:

NONMETALS. :)

Explanation:

im in sixth btw.

What are two basic categories of matter

Answers

Liquid
Solid
And Gas (just incase you need it)

Jim's car travels 60.2 meters in 5 seconds. Tara's car travels 72 in 6 seconds. What is the speed for each car? Whose car travels fastest?

Answers

Answer:

Jim's car travels: 12.04 meters per second.

Tara's car travels 12 meters per second.

Explanation:

Tara's car travels the fastest.

what is 37degrees Celsius in Si units​

Answers

Answer:

310.15 Degrees Kelvin

Explanation:

37 Degrees Celsius = 310.15 Degrees Kelvin = 98.6 Degrees Fahrenheit

Conversion Factor from Celsius to kelvin

or 37 + 273 = 310 Degrees Kelvin

A cube of sugar has the length of one side 4cm.find its volume​

Answers

Answer:

64

Explanation:

since it's a cube all sides are equal

and to calculate volume you multiply the length by the hieght by the width

Bile salts play a crucial role in gastrointestinal homeostasis and digestion. Which phrase is the BEST description of the gastrointestinal function of bile salts?

Answers

Answer:

bile salts emulsify fats and break them down into smaller particles which gives the enzyme lipase a greater surface area to act on during digestion of fats.

Explanation:

What does an electrically neutral atom have the same number of?

protons and electrons

protons and neutrons

electrons and neutrons

protons, electrons, and neutrons

Answers

Answer:

it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons).

Explanation:

So in all of the answers it would be A. Protons and Electrons

Radiant energy is emitted from all objects with temperatures greater than ____________. This means ____________ objects emit radiant energy.

Answers

Radiant energy is emitted from all objects with temperatures greater than ABSOLUTE ZERO. This means ALL objects emit radiant energy.

Radiant Heat and Temperature

Radiant heat is a type of energy that largely depends on the temperature of an object.

This type of energy (radiant energy) is emitted from all objects and can be observed when heat is absorbed on the surface of another material.

Radiant energy can be defined as a type of electromagnetic energy.

Learn more about radiant energy here:

https://brainly.com/question/637839

lemon and amla have a sour taste. why

Answers

Answer:

They both contain citric acid.

Explanation:

Citric acid is sour and is found in citrus fruits such as lemon and amla. Acids usually have a sour taste and therefore lemon and amla are sour.

What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen and 48.68% fluorine if the molar mass of this compound is 156.12 g?

C6H8F4

C5H10F5

C6H6F3

Answers

Hope this can help u

What color of light is emitted from an excited hydrogen atom where the electron has been promoted to n

Answers

Answer:

n1 = 2, n2 = 4

1/wavelength = 1.097*10^7[1/2^2 — 1/4^2]

1/wavelength =0.20568*10^7

wavelength = 486.192*10^-9 Or

wavelength = 486.19 nm (blue color)

Explanation:

I just answered this in class

The electron configuration of element Y ends in s?p4. What is
the symbol for the ion most commonly formed by this element?
a y2+
b y2-
с ү6+
d Y

Answers

This problem is providing us with the end of the electron configuration an element as s²p⁴ and asks for the most commonly formed ion. At the end, the answer is b Y²⁻.

Electron configuration

In chemistry, when analyzing electron configurations, one must first take into account how the energy levels must be filled with electrons.

Now, note the problem states that the electron configuration ends by s²p⁴, which means it is closer to complete the octet so it needs two electrons in order to do so, as it behaves as a nonmetal.

Therefore, the most commonly ion formed by this element is Y²⁻, because of the fact that it needs two electrons to complete the octet and thus become chemically stable and likely to bond with a metal.

Learn more about electron configuration: https://brainly.com/question/5524513

Girls are usually completely physically mature by _____ years old. A. 17 B. 19 C. 14 D. 21.

Answers

Girls are usually completely physically mature by 17 years old
So, A

Answer:

A. 17

Explanation:

Took the test on Edge & got 100% :D

Select the correct answer. Which statement about cellulose is true? A. It’s a synthetic polymer. B. It’s a raw material used to make plastic. C. It’s produced using oil and gas. D. It’s used to make paper products.

Answers

Answer:

It's used to make paper.

Explanation:

Plato answer.

[WILL MARK BRAINLIEST!!] Describe the relationship between molecular structure and the strength of electrostatic
forces between molecules. How does this impact boiling and melting points?

Answers

Answer:

increase the bonding strength between two or more molecules

hope this help

Explanation:

Boiling points and melting points

The overarching principle involved is simple: the stronger the noncovalent interactions between molecules, the more energy that is required, in the form of heat, to break them apart. Higher melting and boiling points signify stronger noncovalent intermolecular forces.

The decomposition of A to B is a first-order reaction with a half-life of 32.8 min:


A → 2B


If the initial concentration of A is 0.595 M, how long will it take for the concentration of A to decrease by 10.4 %?

Answers

it will take about 4.89 seconds

does this image show a physical or chemical change?

Answers

Answer:

Physical

Explanation:

When a substance changes from liquid to gas it's a physical change. There is no chemical reaction between the rubbing alcohol or anything else that would change it's chemical composition.

This is a physical chance

The materials are carried in a cell by the what

Answers

Answer:

The endoplasmic reticulum

What must occur before a newly made polypeptide is secreted from a cell?.

Answers

Answer: Your answer is Its signal sequence must target it to the ER, after which it goes to the Golgi.

Hope this helps!

Copper(I) nitrate, CuNO3, is dissolved in water and forms a transparent, blue mixture. What type of mixture is it

Answers

When a element gets dissolved in water like sugar and water it is: (aq)= Aqueous (dissolved)

Calcium-49, a radioactive isotope, has a half-life of 9 minutes. If an 80-gram sample of the isotope decays for 27 minutes, how many grams of the original sample remain?

Select one:
a. 60
b. 10
c. 40
d. 20​

Answers

Half-Life is the time required for half of the radioactive nuclei to decay to products.

In this case Calcium-49 has a half-life of 9 minutes and is allowed to decay for 27 minutes, meaning the sample experienced 3 half-lives.

80g of Calcium-49 allowed to decay for 9 minutes results in 40g of Calcium-49 (half-life 1)

40g of Calcium-49 allowed to decay for 9 minutes results in 20g of Calcium-49 (half-life 2)

20g of Calcium-49 allowed to decay for 9 minutes results in 10g of Calcium-49 (half-life 3)

b) 10g of Calcium-49 remains after 27 minutes of decay

hope this helps :)

If you transfer energy into two substances which one would melt first

Answers

Answer:

The substance with a weaker molecular attraction

what type of energy transfer occurs as a coiled spring is released

Answers

Answer:

When a spring is coiled up or a rubber band is stretched, mechanical energy is stored in it. When the spring uncoils or the rubber band snaps back, this energy is released. This stored mechanical energy is called potential energy because it has the potential to make things happen.

Explanation:

Hope it helps you :)

Keep Learning :)

How many moles of H2O2 are produced in the production of hydrogen peroxide when 13 grams of oxygen are used

Answers

The answer is going to be 1.625 mol

A sample of hydrogen exerts a pressure of 0.429 atm at 50.00°C. The gas is heated to
95.00°C at a constant volume. What will its new pressure be?

Answers

Answer:

5.847atm

Explanation:

according to Gay- Lussac's law

P1/T1 =P2/ T2

What happens to the freezing temperature of a solvent when a
solute is dissolved into it?
a It is unaffected.
b It increases
Clt decreases.
d It either increases or decreases

Answers

Answer:it decreases

Explanation:

How does carbon dioxide affect the Earth's climate?

Question 17 options:


Carbon dioxide is being added to the soil, which causes weather phenomenon.


Carbon dioxide mixes with water vapor to take harmful chemicals out of the air.


While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.

Answers

Answer:

While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.

According to the Law of Conservation of Matter, what happens to atoms of gas in a balloon when it is placed in the freezer?

the number of atoms stays the same and the energy stays the same, keeping the volume the same


the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume


the number of atoms increases, causing an increase in energy and an increase in volume


the number of atoms decreases, which takes up less space and decreases the volume

Answers

Answer:

the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume

Explanation:

When a liquid is cooled, the average energy of the molecules decreases. At some point, the amount of heat removed is great enough that the attractive forces between molecules draw the molecules close together, and the liquid freezes to a solid.

I hope it helps.

Which statement best describes the characteristics of the Sun?
Red in color
at the center of our galaxy
Hotter than most stars
medium in size

Answers

Medium in size is your answer
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