CHEMISTRY HIGH SCHOOL

The action force always acts in the ____ direction as the reaction force

Answers

Answer 1
Answer:

Answer:

opposite

Explanation:

Newtons law explains that for every action force there is an equal and opposite reaction.

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Highlights the basic points in lewis and lannngmuir theory of electrovalency
What's the balanced equation for cellular respiration?
Which of the following is true in regard to ions?
Which property is true for metals
In this equation, what should be the coefficients of the reactants and products? I2 + O2 → I4O9

4 Which quantity represents the number of protons in an atom?(1) atomic number
(2) oxidization number
(3) number of neutrons
(4) number of valence electrons

Answers

Atomic number. That's basically the definition of atomic number.
The quantity that represents the number of proteins in an atom is the atomic number.

Repulsion is a force or interaction among the atoms in a molecule in which the atoms attract one another. a. True
b. False

Answers

Repulsion is a force or interaction among the atoms in a molecule in which the atoms REPEL one another. By the word itself repulsion, meaning to repel, it automatically bans the idea of ATTRACTION. Therefore, the statement above is FALSE. The answer to this question is "B. False". 

What's the process results in a splitting of a nucleus ?

Answers

Nuclear fission is the answer.
 i believe it is nuclear fission 

Which of the following statements is true? Atoms of isotopes of an element have different numbers of electrons. Atoms of isotopes of an element have different numbers of neutrons. Atoms of the same element all have the same mass. Atoms of isotopes of an element have different numbers of protons.​

Answers

Answer:

atoms of isotopes of an element have different numbers of neutrons.

Explanation:

isotopes have the same number of protons, but different numbers of neutrons.

How many molecules are in 0.25 mole of O2

Answers

According to the concept of Avogadro's number, there are 1.505×10²³ molecules in 0.25 mole of O₂.

What is Avogadro's number?

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number

Number  of molecules is obtained by multiplying number of moles and Avogadro's number , that is 0.25×6.023×10²³=1.505×10²³ molecules.

Thus, there are 1.505×10²³ molecules in  in 0.25 mole of O₂.

Learn more about Avogadro's number,here:

brainly.com/question/11907018

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1 mole O2 -------------------- 6,02.10²³ molecules
0,25 mole O2 ---------------- x molecules

1 . x = 0,25 . 6,02.10²³

x = 1,50.10²³ molecules

The number of white blood cells decreases when fighting infection.
True
False

Answers

TRUE

Does the white blood cell count decrease when fighting an infection?

This is because your body releases more of these cells to fight the infection. However, if you have certain illnesses such as HIV or cancer, your white blood cell count can drop to very low levels. Taking medicines that weaken your immune system may reduce your WBC.

it produces antibodies to fight bacteria, viruses, and other potentially harmful invaders. Neutrophils. They kill and digest bacteria and fungi. They are the most type of white blood cells and are the first line of defense in the event of an infection.

Adults have a low white blood cell count of less than 4,000 cells per microliter of blood. Low white blood cell counts can be an indicator of certain medical conditions, including lupus, rheumatoid arthritis, vitamin deficiency, or side effects of cancer treatment.

Learn more about WBC here:brainly.com/question/9332702

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false
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