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
Deffense [45]
3 years ago
6

2Ag + H2S ➞ Ag2S + H2

Chemistry
2 answers:
erik [133]3 years ago
8 0

Answer:

c

Explanation:

i did the usatest prep

NeX [460]3 years ago
4 0

Answer:

The correct answer is <em>C)  Two atoms of silver are needed to complete the reaction.</em>

Explanation:

The Law of Conservation of Matter postulates that "the mass is not created or destroyed, only transformed." This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends.

Then, taking into account the Law of Conservation of Matter, as an atom cannot be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

For this, the chemical equation must be balanced. For that, you must first look at the subscripts next to each atom to find the number of atoms in each compound in the equation. If the same atom appears in more than one molecule, you must add its quantities. On the other hand, the coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts. By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.

In this case:

Left side: 2 silver  (Ag), 2 hydrogen (H) and 1 sulfur (S)

Right side: 2 silver  (Ag), 2 hydrogen (H) and 1 sulfur (S)

In this case the equation is balanced because you have the same amount of all the elements on each side of the reaction. And <u><em>the 2 in front of 2Ag indicates that,since silver is a reagent, two atoms of silver are needed to complete the reaction. (option C).</em></u>

You might be interested in
When iocnic solids dissolve in water, the break down into the ____ ions (cations) and ___ ions (anions) that they contain?
ddd [48]
What are the answers

8 0
3 years ago
In a video game a flying cocunut moves
Delvig [45]

Answer:

In a video game, a flying coconut moves at a constant velocity of 20 meters/second. The coconut hits an obstacle and moves in the opposite direction with a constant velocity of 10 meters/second.

Explanation:

8 0
3 years ago
1.15.7 cm3 of HCl completely neutralised 25 cm3 of LiOH. The HCl was 2 mol/dm3.The equation is :
Whitepunk [10]

Answer:

C₂ = 1.26 mol/dm³

Explanation:

Given data:

Volume of HCl =V₁ =  15.7 cm³

Volume of LiOH = V₂ =  25 cm³

Concentration of HCl =C₁ = 2 mol/dm³

Concentration of LiOH =C₂=  ?

Solution:

Chemical equation:

LiOH + HCl    →     LiCl + H₂O

Formula:

C₁V₁   = C₂V₂

by putting values,

15.7 cm₃× 2 mol/dm³ = C₂× 25 cm³

C₂ = 15.7 cm₃× 2 mol/dm³ / 25 cm³

C₂ = 31.4 cm₃.mol/dm³ / 25 cm³

C₂ = 1.26 mol/dm³

8 0
3 years ago
HELLOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO FREEE POINTS REEEEEEEEEEEE and Ladies talk to me hehe &gt;
alina1380 [7]

Answer:

Hiiiiiii

<h2><u>Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.[2]:1.1 It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science.</u></h2>

<h2><u>Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.[2]:1.1 It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science.</u></h2>
4 0
3 years ago
Read 2 more answers
How to balance barium and oxygen yield barium oxide
olga55 [171]
Barium : Ba^{+2} with +2 being the charge
Oxygen : O^{-2} with -2 being the charge

The given equation can be written as:
Ba + O = BaO

Since the sum charges of Barium and Oxygen equals 0, there is no need to add subscripts.

Both Ba and O appear on the left and right side of the equation once, so there is no need to add a coefficient.

Ba + O = BaO is balanced
4 0
3 years ago
Other questions:
  • A material found in air, water, or soil that is harmful to humans or other organisms
    6·1 answer
  • Which of these species are free radicals? check all that apply. check all that apply. no2 no o o2 o3?
    14·1 answer
  • What is the number of protons that the element
    11·1 answer
  • What is the kcalorie value of a meal supplying 30 g of carbohydrates, 8 g of protein, 10 g of fat, and 3 g of alcohol?
    9·2 answers
  • A hypothetical main group element E reacts with chlorine to form an ionic compound with the formula ECl. The element is a member
    10·1 answer
  • The observed rotation of 2.0 gg of a compound in 50 mLmL of solution in a polarimeter tube 25-cmcm long is +47.2 ∘∘ . What is th
    12·1 answer
  • Will mark brainliest!!
    7·1 answer
  • HCl is produced in the stomach and that he has been vomiting his stomach contents, predict the acid/base imbalance that repeated
    7·1 answer
  • i want to find the volume of a block of wood it has a length of 6 inches a width of 7 inces and a height of 8 inches what is the
    14·1 answer
  • What is carbon sink and how it effects our environment?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!