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
AlekseyPX
3 years ago
13

A measurement of the amount of solute that is dissolved in a given quantity of solvent; usually expressed as mol/L.

Chemistry
1 answer:
UNO [17]3 years ago
4 0

Answer:Concentration is a measurement of the amount of solute that is dissolved in a given quantity of solvent; usually expressed as mol/L.

Explanation:

You might be interested in
HELP ME PLEASE. no links.
tatiyna

Answer:

Experimental group

Explanation:

i hopes this helps let me know if im wrong:)

4 0
3 years ago
How many grams of Ni are formed from 55.3 g of Ni2O3?<br><br> 2Ni2O3(s)⟶4Ni(s)+3O2(g)
Neko [114]

Answer:

39.2 g

Explanation:

  • 2Ni₂O₃(s) ⟶ 4Ni(s) + 3O₂(g)

First we <u>convert 55.3 grams of Ni₂O₃ into moles of Ni₂O₃</u>, using its<em> molar mass</em>:

  • 55.3 g ÷ 165.39 g/mol = 0.334 mol Ni₂O₃

Then we <u>convert 0.334 moles of Ni₂O₃ into moles of Ni</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:

  • 0.334 mol Ni₂O₃ * \frac{4molNi}{2molNi_2O_3} = 0.668 mol Ni

Finally we <u>calculate how much do 0.668 Ni moles weigh</u>, using the<em> molar mass of Ni </em>:

  • 0.668 mol Ni * 58.69 g/mol = 39.2 g
7 0
3 years ago
Given the balanced equation below, calculate the moles of aluminum that are needed to react completely with 28.7 moles of FeO. Y
Alexxx [7]

Answer:

43.05 moles of Al needed to react with 28.7 moles of FeO.

Explanation:

Given data:

Moles of FeO = 28.7 mol

Moles of Al needed to react with FeO = ?

Solution:

Chemical equation:

2Al + 3FeO → 3Fe + Al₂O₃

Now we will compare the moles of Al with FeO.

                            FeO        :           Al

                             2            :            3

                          28.7          :         3/2×28.7 = 43.05 mol

Thus 43.05 moles of Al needed to react with 28.7 moles of FeO.

8 0
3 years ago
What is the value of delta Hrxn for this equation:
Ratling [72]

Answer:

The ΔHrxn for the above equation = 179 kJ/mol

Explanation:

The reaction bond enthalpies are for the reactant;

3 × N-H = 3 × 390 = 1,170 kJ/mol

2 × O=O = 2 × 502 = 1004 kJ/mol

The reaction bond enthalpies are for the product;

3 × N-O = 3 × 201 = 603 kJ/mol

3 × O-H = 3 × 464 = 1,392 kJ/mol

The ΔHrxn for the above equation is therefore;

ΔHrxn = 1,170 + 1,004 - (603 + 1,392) = 179 kJ/mol

6 0
3 years ago
Molecule: Br2 and Br2. <br> Is it polar or nonpolar?
Ostrovityanka [42]
This combination in non polar.
7 0
3 years ago
Other questions:
  • Which of the following is an example of a synthesis reaction?
    14·1 answer
  • galium has a weighted average atomic mass of 69.7 and two naturally occurring isotopes: Gallium-69 and Gallium-71. Gallium-69 ha
    14·1 answer
  • You take a bottle of soft drink out of your refrigerator. The contents are liquid and stay liquid, even when you shake them. Pre
    7·1 answer
  • The empirical formula for two compounds that have very different properties (one tastes very sour and the other very sweet) is c
    12·2 answers
  • The box holds 70 cm3 of water. Water has a density of 10 g/cm³. What is the mass of the water
    5·1 answer
  • Polypeptides are synthesized from amino acid building blocks. The condensation reaction between the growing polypeptide chain an
    13·1 answer
  • Apple's "creative pros" and "evangelists," who help customers get the most out of their products and gain support for its produc
    8·1 answer
  • Calcium ions, barium ions, and magnesium ions all have two positive charges. What could explain the differences in the way each
    14·2 answers
  • What’s the balanced equation of sodium hydroxide + carbon dioxide produces sodium carbonate + water?
    15·1 answer
  • Which extinction factors do you think cause the most extinctions? Why?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!