Hydrogen ions and PH

Answer: C. 3, 1, 4, 2

Explanation:

Got It Right On Edge

Answer:

C

Explanation:

Answer: 45.038

Explanation: 2.016 H (2*1.008) + 15.999 O (1*15.999)

One mole of Zn weighs about 65.4 grams. Therefore, the mass equivalent to 2.5 moles is number of moles times the atomic mass that is 163.5 here.

Any substance containing 6.022 × 10²³ atoms is called one mole of that substance. This number is called Avogadro number. Thus one mole of any element contains Avogadro number of atoms.

The mass of one mole of the  element is called its atomic mass. Similarly the mass of one mole of a compound is called its molar mass. Zinc is a transition metal.

Atomic mass of Zn = 65.1 g

thus, mass of 2.5 mole of Zn = 65.1 ×  2.5  = 163.5 g.

Therefore, the mass of 2.5 moles of Zn is 163.5 g

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Answer:

Water vapor is the most abundant greenhouse gas in the atmosphere.

Answer:

O2+H2 → H2O

become→zero to−2

∵ it will be reduced and oxidation state of H

2

becomes zero to +1 it will be oxidised.

∴ reaction will be redox

Explanation:

please mark me as brainalist

Answer:

The answer is going to be D

Answer:(GMO)

Explanation: genetically modified organism (GMO)

O₂ required = 1/2 x 7.8 = 3.9 moles

Answer:

are there answer options

Explanation:

No, thermal energy is not being transferred from the metal pan to the eggs by radiation in this image.

Radiation can be described as energy or particles from a source that travels through space or other mediums. Light, heat, microwaves and wireless communications are all forms of radiation.

It is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.

In the image, since eggs are in direct contact with the pan therefore it is conduction and not radiation.

Therefore, No, thermal energy is not being transferred from the metal pan to the eggs by radiation in this image.

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It's important for a few reasons actually

here you go have a nice day

. Carbon is an essential element for all life, so understanding how it moves helps us to understand biological processes and factors that influence them.

. One form carbon take's is the greenhouse gas carbon dioxide, CO2. Increased levels of carbon dioxide insulate the Earth, causing temperatures to rise. Understanding how carbon dioxide is absorbed and released helps us understand the climate and predict global warming.

. Carbon is not in balance, so it's important to learn where it is being stored and released. The rate at which carbon is deposited into living organisms is not the same as the rate it is returned to the Earth. There is about 100x more carbon in living matter than in the Earth. Burning fossil fuels releases massive amounts of carbon into the atmosphere and to the Earth.

. The carbon cycle is tied to the availability of other elements and compounds. For example, the carbon cycle is tied to the availability of oxygen in the atmosphere. During photosynthesis, plants take carbon dioxide from the air and used it to make glucose (stored carbon), while releasing oxygen.

Cyclopentene is industrially produced in large quantities. It is used as a monomer for the synthesis of plastics, in addition to other chemical syntheses.

Reaction 1 - Preparation of keto-aldehyde

Reaction 2 - Preparation of cyclopentene carbaldehyde

Reaction 3 -Preparation of α,β-epoxy-carbaldehyde cyclopentane

Reaction 4 - Preparation of cyclopentene alcohol

Reaction 5 -Preparation of α,β-epoxy-cyclopentane alcohol

Reaction 6 -Preparation of α,β-epoxy-carbaldehyde cyclopentane

With this information we can conclude that cyclopentene is used as a monomer for the synthesis of plastics.

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The concentration of the hydroxide ion [OH¯] in the solution having a pOH of 3.45 is 3.55×10¯⁴ M

The pOH of a solution simply defines the concentration of the hydroxide ion [OH¯] in the solution. It can be expressed mathematically as

pOH = –Log [OH¯]

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

pOH = –Log [OH¯]

3.45 = –Log [OH¯]

Multiply through by –1

–3.45 = Log [OH¯]

Take the anti-log of –3.45

[OH¯] = anti-log of (–3.45)

[OH¯] = 3.55×10¯⁴ M

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Answer:

how ston age humans made hand areas

At the moment the ball hits the ground, its kinetic energy is greatest and its potential energy is zero.

Answer:

Increasing the separation distance between objects decreases the force of attraction or repulsion between the objects.

Answer:

-34.90

Explanation:

by enclosed to 20 ml metal cylinder was filled with glass increased by 40 and divided to 2 equal 30 then add the theoragly formula .90

The part of the process that requires greater energy is the breaking of bonds between oxygen and hydrogen atoms

A chemical reaction is said to occur when the chemical bonds in substances break and new bonds are formed. Hence, a chemical reaction involves the breaking and forming of bonds.

We can see that the part of the process that requires greater energy is the breaking of bonds between oxygen and hydrogen atoms because energy in the form of heat had to be supplied for that to happen.

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Answer:

This reaction is a chemical reaction because it involves the forming and breaking of bonds. The part of the reaction that is higher in energy is breaking the bond between oxygen and hydrogen atoms. This is because energy is supplied being in the form of heat which requires more energy.

Explanation:

The volume of the sample of propane at STP is 0.62 mL.

Volume is the amount of space that a substance or object occupies.

To calculate the volume of gas at STP, we apply the formula below.

Formula:

Where:

Make V' The subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, the volume of the sample of propane at STP is 0.62 mL.
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The atomic mass can be defined as the mass of neutrons and protons in the atom. The atomic mass of the oxygen isotope is 18 amu.

An atom is the smallest particle comprised of three subatomic units, namely electrons, protons, and neutrons.

The number of electrons in the atoms determines the atomic number, while the number of protons and neutrons determines the atomic mass.

The atomic mass can be given as:

[tex]\rm Atomic\;mass=Neutrons+Protons[/tex]

The oxygen isotope has been comprised of 10 neutrons and 8 protons. The atomic mass of the isotope is given as:

[tex]\rm Atomic \;mass=10+8\;amu\\Atomic\;mass=18\;amu[/tex]

The atomic mass of the oxygen isotope is 18 amu. Thus, option C is correct.

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Answer:

18 amu

Explanation:

atomic mass = #protons + #neutrons = 8 + 10 = 18 am

Answer:

305.65 K

Explanation:

Celsius to Kelvin => + 273.15

32.5 + 273.15

= 305.65 K

Answer:

The answer is:

305.5K

Explanation:

I did the assignment on Edge, 2022.

(See the attachment below.)

Hope this helped, good luck on the Quiz! <3

The study of earth science is very easy to understand. It is very possible to get confused when studying for a test. The right thing to do is to be  calm, meet someone who can put you through in areas you don't understand  and also take you time in using different methods of comphenesion.

Earth science is known to be the study of the structure or the form of the Earth along with its properties and its processes. Knowing this will help you known more about maintenance of life on our planet.

Most times when people have test, they often have tension and other kinds of things that tends to make them not to focus on their studies. But you don't have to worry. Be calm, ask a much older and learned person for help in areas you do not understand and read it over again.

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Answer:

Physical: Conducts Electricity, Magnetic, Malleable and ductile

Chemical: Rusting, reacts with acid

Explanation:

The reason, why I categorized the listed items as "Physical" was because there is no major change, no matter if it is magnetic, malleable, etc. The item is still in its original form.

Whilst the reasons I put rusting, and reacting with acid as chemical, is because when an item rusts, you can no longer change it back to its original state, and when you an item reacts with the acid, at times (depending on the metal, it will create or form compunds)

Answer:

no because humans turn their extra body heat into sweat instead of dissipate heat through evaporation in the air.

Explanation:

hope this helps!

Answer:

Image result for Based on the traits, which traits were most prevalent in the class? Did you have more traits aligned with the dominant traits or more that were rare? If you have a rare trait, which do you have?

The Big Five personality traits are extraversion (also often spelled extroversion), agreeableness, openness, conscientiousness, and neuroticism. Each trait represents a continuum. Individuals can fall anywhere on the continuum for each trait. The Big Five remain relatively stable throughout most of one's lifetime.

Explanation:

Answer:

Explanation:

Nitrogen fertilizers are added to soil because nitrogen is very important for plant growth and most organisms can not utilize atmospheric nitrogen. Even though the percentage of nitrogen in the atmosphere is very high, yet it is not available to most living organisms for use because the energy required to break the bonds that hold the diatomic nitrogen together is very high

Answer:

start moving faster

Explanation:

i would guess because they slow down our freeze when they get cold

Answer:

CuCl2 + 2NaNO3 - > Cu(NO3)2 + 2NaCl