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zvonat [6]
4 years ago
7

According to scientific evidence the age of the earth is about

Chemistry
2 answers:
guapka [62]4 years ago
8 0
<span>It is 4.6 billion years old.
</span>
anygoal [31]4 years ago
4 0

4.6 billion years old

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Given the reaction agi(s) ↔ ag+(aq) + i-(aq) solution equilibrium is reached in the system when
Julli [10]
Missing question:
1) the rate of dissolving reaches zero 
<span>2) the rate of crystallization reaches zero </span>
3) the rate of dissolving is zero and the rate of crystallization is greater than zero.
<span>4) both the rate of dissolving and the rate of crystallization are equal and greater than zero.
</span>
Answer is: 4) both the rate of dissolving and the rate of crystallization are equal and greater than zero.
Silver chloride (AgCl) dissolves and form silver and chlorine ions, in the same time silver and chlorine ions crystallizate and form solid salt silver chloride.
In equilibrium rates of dissolvinf and crysallization and concentration of ions do not change.
7 0
3 years ago
What is the difference between mass and weight?
Olin [163]

Explanation:

The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.

7 0
3 years ago
assuming that each human being has 60 trillion body cells in that the earths population is 6 billion calculate the total number
sesenic [268]

3.6 x 10²³

Explanation:

Given parameters:

  Number of cell per body = 60 trillion body cells

   Population of the earth = 6 billion

Unknown:

Total number of living human body cells = ?

Solution:

  To solve this problem, simply find the product:

 Total number of living human body cells = number of cell per body x population of the earth

          1 trillion = 1 x 10¹²

         60 trillion = 6 x 10¹³

         1 billion = 1 x 10⁹

         6 billion = 6 x 10⁹

Total number of living human body cells = 6 x 10¹³ x  6 x 10⁹

                                                                      = 6 x 6 x 10⁽¹³⁺⁹⁾

                                                                       = 36 x 10²² or 3.6 x 10²³

learn more:

Product brainly.com/question/10541435

#learnwithBrainly

7 0
4 years ago
99<br> 96<br> 040Zr<br> +<br> 42He<br> ----&gt;<br> + "42Mo
Ahat [919]

he mass defect of the helium nucleus ⁴He₂ is 0.030377 u

Further explanation

Mass defect means the difference between the mass of particles forming an atom with an atomic mass.

Δm = mass defect ( u )

mp = mass of proton ( u )

me = mass of electron ( u )

mn = mass of neutron ( u )

M = atomic mass ( u )

A = mass number

Z = atomic number

Let us now tackle the problem !

Given :

Unknown :

Δm = ?

Solution :

Learn more

Rutherford’s major achievements : brainly.com/question/1552732

Unit of radius of an atom : brainly.com/question/1968819

Fusion : brainly.com/question/11395223

Answer details

Grade: College

Subject: Physics

Chapter: Nuclear Physics

Keywords: Mass , Defect , Nucleon , Number , Atomic , Proton , Electron , Neutron

4 0
3 years ago
Write balanced equations and Kb expressions for these Brønsted-Lowry bases in water:Benzoate ion, C₆H₅COO⁻
Dima020 [189]

The balanced equation is,

OBz-(aq) + H2O(l) ---> HOBz(aq) + OH-(aq)

The equation for Kb is :

Kb = [HOBz][OH-]/[OBz]

<h3>What do we know about benzoate ion?</h3>

The conjugate base of benzoic acid, benzoate is the simplest member of the family of benzoates. It consists of a benzoic acid core with a proton missing to give it a charge of -1. It serves as a xenobiotic metabolite for humans as well as a metabolite for plants. It is a benzoic acid's conjugate base.

To learn more about pKb:

brainly.com/question/12193534

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5 0
2 years ago
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