1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
NemiM [27]
3 years ago
11

Which of the following must be the same in atoms of the same element? (Ex: all atoms of silver)

Chemistry
1 answer:
rewona [7]3 years ago
4 0

Answer:

option b = atomic number

Explanation:

The atomic number of silver is 47. Its isotopes range from Ag⁹³ - Ag¹³² . The naturally occurring silver is made up of two stable isotopes i.e ₄₇Ag¹⁰⁷ and ₄₇Ag¹⁰⁹. The percentage of  Ag¹⁰⁷ is 51.84% so it is more abundant than ₄₇Ag¹⁰⁹. Their atomic masses are different but the atomic number is same i.e 47.

A neutral atom have equal number of protons and neutrons. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example in case of silver 47 protons and 47 electrons are present.  The number of protons or number of electrons are the atomic number of an atom while the number of protons and number of neutrons are the mass number of an atom. Every atom consist of nucleus or a positive center. The protons and neutrons are present with in the nucleus while electrons are present out side the nucleus. All these three subatomic particles construct an atom.

You might be interested in
Consider the following statistic. As of January 2009, the USA has produced 60,000 metric tons of nuclear waste in 60 years of op
Korolek [52]

Answer: A

Explanation:

4 0
2 years ago
A membrane Is a flexible outer layer found on:
ratelena [41]

Answeridk:

Explanation:isk

8 0
3 years ago
Tetrachloromethane, CCl4 is produced from the substitution reaction between methane and chlorine gas. If the rate of formation o
Korolek [52]

The rate of disappearance of chlorine gas : 0.2 mol/dm³

<h3>Further explanation</h3>

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.

For reaction :

\tt aA+bB\rightarrow cC+dD

The rate reaction :

\tt -\dfrac{1}{a}\dfrac{d[-A]}{dt}= -\dfrac{1}{b}\dfrac{d[-B]}{dt}=\dfrac{1}{c}\dfrac{d[C]}{dt}=\dfrac{1}{d}\dfrac{d[D]}{dt}

Reaction for formation CCl₄ :

<em>CH₄+4Cl₂⇒CCl₄+4HCl</em>

<em />

From equation, rate of reaction = rate of formation CCl₄ = 0.05 mol/dm³

Rate of formation of  CCl₄  = reaction rate x coefficient of  CCCl₄

0.05 mol/dm³ = reaction rate x 1⇒reaction rate = 0.05 mol/dm³

The rate of disappearance of chlorine gas (Cl₂) :

Rate of disappearance of  Cl₂  = reaction rate x coefficient of  Cl₂

Rate of disappearance of  Cl₂ = 0.05 x 4 = 0.2 mol/dm³

4 0
3 years ago
K2S(aq) + Co(NO3)2(aq) → CoS (?) + KNO3 (?)
Butoxors [25]

Answer:

a!

Explanation:

5 0
2 years ago
How many moles of solute are contained in 3.0 L of a 1.5 M solution? Helppp pleaseee
Art [367]
4.5 moles! I hope my answer helps
8 0
3 years ago
Other questions:
  • Which part of the electromagnetic spectrum has the lowest radiant energy?
    5·2 answers
  • Which of the following types of radiation has the greatest ability to penetrate matter
    13·1 answer
  • A mining company wants to build a modern processing plant that is safe for workers.
    14·1 answer
  • How many grams of water will form when 10.54g of h2o react with 95.10g of O2
    8·1 answer
  • Complete each nuclear fusion reaction.
    11·2 answers
  • What is 10.5g equal to in kg
    6·1 answer
  • The element thallium is 70% thallium-205 and 30% thallium-203. Calculate its relative atomic mass to 1 decimal place.
    14·1 answer
  • Mixtures have (exact,relative) amounts of the same substances
    9·1 answer
  • 2. What is the mass of one mole of Na?
    10·1 answer
  • 9
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!