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
Anon25 [30]
3 years ago
14

3. How many moles of aluminum are needed to react completely with 1.2 mol of FeO?

Chemistry
1 answer:
hoa [83]3 years ago
3 0

Answer:

ssf

Explanation:

You might be interested in
3) Calculate the percent by mass of 3.55 g NaCl dissolved in 88 g water.
kotykmax [81]

Answer:

The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%

Explanation:

When a solute dissolves in a solvent, the mass of the resulting solution is a sum of the mass of the solute and the solvent.

A percentage is a way of expressing a quantity as a fraction of 100. In this case, the percentage by mass of a solution is the number of grams of solute per 100 grams of solution and can be represented mathematically as:

Percent by mass=\frac{mass of solute}{mass of solution} *100

In this way it allows to precisely establish the concentration of solutions and express them in terms of percentages.

In this case:

  • mass of solute: 3.55 g
  • mass of solution: 3.55 g + 88 g= 91.55 g

Replacing:

Percentbymass=\frac{3.55}{91.55}*100

Percent by mass= 3.88%

<u><em>The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%</em></u>

5 0
3 years ago
During which step of meiosis do the homologous chromosomes line up in the middle of the cell?
777dan777 [17]

Answer:

It is D

metaphase 1

Explanation:

in metaphase chromosome line up in the middle.

3 0
3 years ago
Naming the hydrates?
slamgirl [31]
HEY mate here your answer

CoBr2 . 6 h2o = Cobalt(II) Bromide Hexahydrate
8 0
3 years ago
Read 2 more answers
The reaction 2a → a2​​​​​ was experimentally determined to be second order with a rate constant, k, equal to 0.0265 m–1min–1. if
katovenus [111]

The integrated rate law for a second-order reaction is given by:

\frac{1}{[A]t} =   \frac{1}{[A]0} + kt

where, [A]t= the concentration of A at time t,

[A]0= the concentration of A at time t=0

<span>k =</span> the rate constant for the reaction


<u>Given</u>: [A]0= 4 M, k = 0.0265 m–1min–1 and t = 180.0 min


Hence, \frac{1}{[A]t} = \frac{1}{4} + (0.0265 X 180)

<span>                                        = 4.858</span>

<span><span><span>Therefore, [A]</span>t</span>= 0.2058 M.</span>

<span>
</span>

<span>Answer: C</span>oncentration of A, after 180 min, is 0.2058 M

7 0
3 years ago
Read 2 more answers
Hydrogen peroxide is a powerful oxidizing agent; it is used in concentrated solution in rocket fuel and in dilute solution in ha
Anestetic [448]

The molarity of the hydrogen peroxide solution from the information supplied in the question is 12.26 M.

Co = 10pd/M

Where;

Co = concentration = ?

p = percent of the hydrogen peroxide =  30%

d = Density of hydrogen peroxide =  1.39 g/ml

M = Molar mass  = 34 g/mol

Substituting values;

Co = 10 × 30 ×  1.39/34

Co = 12.26 M

The molarity of the hydrogen peroxide solution from the information supplied in the question is 12.26 M.

Learn more: brainly.com/question/6111443

4 0
2 years ago
Other questions:
  • The chlorination of the iron (III) ion is an endothermic reaction.
    5·1 answer
  • 1.72 mol of LiCl in 37.5 L of solution
    9·1 answer
  • A chemical reaction gives off 1,500 kj of heat energy. about how many calories is this? (1 calorie = 4.18 joules)
    8·2 answers
  • Ask 3 questions that will help you better understand the coronavirus
    12·1 answer
  • What intermolecular forces are present in each of the substances?
    7·2 answers
  • -what color is the tube<br> -is the reaction reversible <br> -has the reaction reached equilibrium
    13·1 answer
  • Calculate the gravitational force of attraction between a 26kg boy and his 5.1kg dog when they are separated by 0.19m
    6·1 answer
  • The process by which a cell takes in a large particle is called
    15·2 answers
  • Ideal gasses
    5·1 answer
  • 1. How many metals, nonmetals and metalloids are there in the periodic table?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!