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
natta225 [31]
3 years ago
9

QUICK PLEASE

Chemistry
1 answer:
masya89 [10]3 years ago
3 0

Answer:

20.0% w/v A

Explanation:

A 20.0 w/V...

You might be interested in
Check all examples that would a chemical property.
fenix001 [56]

Answer:

d. reactivity to acid

f. reacts to air

Are chemical properties

Explanation:

3 0
3 years ago
Three nails have a mass of 3.05 g. How many moles of iron do they contain?
serg [7]

Hello!

Three nails have a mass of 3.05 g. How many moles of iron do they contain?

Data:

3 nails of iron = 3.05 g (by nail)  

The atomic mass of iron is 55.845 amu, so the molar mass is:

M = 55.845 → M ≈ 56 g / mol    

With a simple 3 rule:  

56 g → 1 mol

3.05 g → y mol  

Therefore:

\dfrac{56}{3.05} = \frac{1}{y}

56*y = 1*3.05

56y = 3.05

y = \dfrac{3.05}{56}

\boxed{y \approx 0.05446\:mol}}

Soon:

3 nails → 3*0.05446 = 0.1638 moles (answer)

_______________________

I Hope this helps, greetings ... Dexteright02! =)

5 0
3 years ago
Balance the double replacement: <br> Mn(SO4)2 + K2S2O3 =
Firlakuza [10]

Answer:

        Mn(SO₄)₂ + 2 K₂S₂O₃ ----------> Mn(S₂O₃)₂ + 2 K₂SO₄

Explanation:

Reaction Given:

              Mn(SO₄)₂ + K₂S₂O₃ =

Balance Equation = ?

Solution:

Balance Chemical Equation:

A balanced chemical equation is that in which the number of the reactant atoms equal to the number of the product atom.

For example if the Sulfur at the reactant side is 6, the number of Sulfurmust be 6 on the product side.

First we Complete the reaction

                  Mn(SO₄)₂ + K₂S₂O₃ ----------> Mn(S₂O₃)₂ + K₂SO₄

Check the chemical equation and count the number of atoms at the reactant side and product side.

If the number of atoms of the reactants equal to the number of atoms of products then the reaction is balanced but if not equal, then reaction is not balanced

Balancing is an trial and error process to get a balance reaction.

First we count the number of atoms of reactant and product

             Mn(SO₄)₂ + K₂S₂O₃ ----------> Mn(S₂O₃)₂ + K₂SO₄

Number of atoms of Reactant:

Mn = 1

S = 4

O = 7

K = 2

Number of atoms of Product:

Mn = 1

S = 5

O = 10

K = 2

So this is not a balance equation as the atoms of the reactant atoms not equal to the number of the product atoms.

As there are 4 Sulfur, and 7 oxygen atoms at reactant side but 5 Sulfur, and 10 oxygen atoms at the product side so we balance this along with other

Balanced Equation:

          Mn(SO₄)₂ + 2 K₂S₂O₃ ----------> Mn(S₂O₃)₂ + 2 K₂SO₄

Now count the number of atoms of reactant and product

Number of atoms of Reactant:

Mn = 1

S = 6

O = 14

K = 4

Number of atoms of Product:

Mn = 1

S = 5

O = 10

K = 2

Now this reaction is balanced as the atoms of the reactant atoms equal to the number of the product atoms.

So,

the Coefficient of  K₂S₂O₃ and K₂SO₄ is 2 in balanced equation

4 0
3 years ago
Sarah measures out 151 grams of SO2. How many miles is this? Express your answer to three significant figures
elena-s [515]

150 g SO₂ = 2.36 mol SO₂

M_r = 32.06 + 2×16.00 = 32.07 + 32.00 = 64.06

Moles of SO₂ = 151 g SO₂ × [1 mol SO₂/64.06 g SO₂] = 2.36 mol SO₂

6 0
3 years ago
Tony recorded data from his chemistry experiment in the following table. Sample Color Volume Temperature Mass A yellow 150 mL 20
siniylev [52]

Color

Explanation:

Only color out of the listed observations is the qualitative observation. Qualitative observations are usually carried out using our senses.

  • Sense of touch makes us feel the texture of particular subject.
  • Sense of smell gives different types of scents and odors.
  • Sense of sight helps us to identify different colors and appearances in a study.
  • Sense of taste helps to know if something is bitter, sweet or sour.
  • Sense of hearing helps to know how audible something it.

Qualitative observations does not involve the use of numbers.

Learn more:

observations brainly.com/question/5096428

#learnwithBrainly

6 0
3 years ago
Other questions:
  • What process is used to find technological solutions.
    9·1 answer
  • In order to draw a conclusion, scientists must_______ data from an investigation
    13·1 answer
  • States two properties a solute need to satisfy to be responsible for the colligative properties?​
    10·1 answer
  • Heating water makes most solids in it
    6·1 answer
  • Compare the dermis and epidermis. Explain the function of each.
    9·1 answer
  • Which statement correctly pairs the climate factor with its effect on temperature? *
    11·1 answer
  • What is the theoretical yield of sodium chloride when 8.3 g of sodium is reacted with 4.5 g of chlorine? 2Na(s) + Cl2(g) → 2NaCl
    11·1 answer
  • Gamma rays are very penetrating because of their
    7·1 answer
  • Use Appendix C to rank the following in order of increasing acid strength: HIO₃, HI, CH₃COOH, HF.
    14·1 answer
  • Select the correct answer. which substance in this redox reaction is the oxidizing agent? cu 2agno3 → 2ag cu(no3)2 a. n b. agno3
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!