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
sergejj [24]
3 years ago
5

Please help, timed test, will give brainliest

Chemistry
1 answer:
OlgaM077 [116]3 years ago
4 0

Answer:

The answer to your question is letter B

Explanation:

A.)                     2 AgCl + Na2S ⟶ 2 Ag2S + 2 NaCl

                Reactants           Elements              Products

                      2                         Ag                         4

                      2                          Cl                          2

                      2                          Na                         2

                      1                            S                           2

This reaction is unbalanced

B.)                       2 AgCl + Na2S ⟶ Ag2S + 2 NaCl

                Reactants           Elements              Products

                      2                         Ag                         2

                      2                          Cl                          2

                      2                          Na                         2

                      1                            S                           1

This reaction is balanced

C.)                         AgCl + Na2S ⟶ 2 Ag2S + 2 NaCl

                Reactants           Elements              Products

                      1                         Ag                         4

                      1                          Cl                          2

                      2                          Na                         2

                      1                            S                           2

This reaction is unbalanced

D.)                2 AgCl + 2 Na2S ⟶ Ag2S + NaCl

                Reactants           Elements              Products

                      2                         Ag                         4

                      2                          Cl                          1

                      4                          Na                         1

                      2                            S                          1

This reaction is unbalanced

You might be interested in
A non-metallic atom(at.no. 9) forms a molecule of the same,containing a single covalent bond. give reason
bezimeni [28]
They are so may forms
4 0
3 years ago
Sulfuric acid is an important chemical in industrial production of many products. In the “old” days, it was called oil of vitrio
Sauron [17]

Answer:

6.475 M

Explanation:

Number of moles = 25.9 moles

Volume = 4.00 L

Molarity = ?

The relationship between the quantities is given as;

Molarity = Number of moles / Volume

Molarity = 25.9 / 4

Molarity = 6.475 M

7 0
3 years ago
A 10.0-gram sample of which element has the smallest volume at STP?
DaniilM [7]

(4) zinc

Explanation:

Given parameters:

Mass of the sample = 10g

Condition = STP

Unknown:

Element with the least volume = ?

Solution:

The number of moles of substance as STP can be derived using the equation below;

    Volume of substance = number of moles x 22.4

Number of moles = \frac{mass}{molar mass}

   since mass = 10g

Number of moles of Al = \frac{10}{27} = 0.37mole

Number of moles of Ti = \frac{10}{47.9} = 0.29mole

number of moles of Mg = \frac{10}{24} = 0.47mole

Number of moles of Zn = \frac{10}{65.5} = 0.15mole

Zinc has the least number moles and it will have the lowest volume at STP because the volume directly proportional to number of moles.

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

6 0
4 years ago
If sock type A is pulled first, sock type B second, and sock type C third, the fourth sock type must match one of A, B, or C.
alexandr1967 [171]

Answer:

a

Explanation:

sock type a is first then other sock types

5 0
3 years ago
Which tool is often fabricated on the job from small channel or angle iron
nadezda [96]

The answer is Straight Edge.

4 0
3 years ago
Other questions:
  • W = m·g is a form of Newton's ______ Law.<br><br> A)first<br><br> B)second<br><br> C) third
    7·1 answer
  • Nitric acid, a major industrial and laboratory acid, is produced commercially by the multi-step Ostwald process, which begins wi
    7·1 answer
  • 1.Heat Energy is also known as?
    10·2 answers
  • Define what chemical and radiant energy is
    12·1 answer
  • Solid lithium hydroxide is used to "scrub" CO2 from the air inspacecraft and submarines; it reacts with the CO2 to produce lithi
    9·1 answer
  • What two states of matter are found during melting
    10·1 answer
  • A 250 mL Erlenmeyer flask has a measured volume of 287mL. The experiment is performed with a this flask but the volume of 250 mL
    6·1 answer
  • What type of reaction is C 12 H 22 O 11&gt; 12C+11H2O
    6·1 answer
  • Any science fair questions for 8th graders?<br><br> please list at least 4
    11·1 answer
  • After an afternoon party, a small cooler full of ice is dumped onto the hot ground and melts. If the cooler contained 6.60 kg of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!