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
snow_lady [41]
3 years ago
7

I don’t understand how to do this

Chemistry
1 answer:
padilas [110]3 years ago
6 0

Answer:

do what?????

Explanation:

You might be interested in
The solubility of k2cr2o7 in water is 125 g/l at 20 °c. a solution is prepared at 20 °c that contains 6.0 grams of k2cr2o7 in 50
Pachacha [2.7K]
The solubility is the guide to the maximum amount of solute that can be dissolved in a certain amount of solvent at a certain temperature to make a saturated solution. Any amount less than this would result to unsaturated, while any amount more would result to saturated.

6 g/(50 mL * 1 L/1000 mL) = 120 g/L

Since it is less than the solubility of 125 g/L, then <em>this solution is unsaturated</em>.
5 0
3 years ago
The melting points of four impure samples of lead(II) bromide were measured. The results are
CaHeK987 [17]

Answer:

D

372

373

Explanation:

4 0
3 years ago
Give two reasons why people should use petrochemicals wisely.
SSSSS [86.1K]
I. Because they're a limited resource

2 Because they're a cause of carbon pollution.
8 0
3 years ago
A solution at 25 degrees Celsius is 1.0 × 10–5 M H3O+. What is the concentration of OH– in this solution? 1.0 × 10–5 M OH– 1.0 ×
Triss [41]

Answer:

1.0 × 10⁻⁹ M.

Explanation:

<em>∵ [H₃O⁺][OH⁻] = 10⁻¹⁴.</em>

[H₃O⁺] = 1.0 x 10⁻⁵ M.

<em>∴ [OH⁻] = 10⁻¹⁴/[H₃O⁺]</em> = 10⁻¹⁴/(1.0 x 10⁻⁵ M) = <em>1.0 × 10⁻⁹ M.</em>

6 0
3 years ago
Read 2 more answers
If your end product is 1.5 moles of KMnO 4 how many moles of manganese oxide were used in the reaction? The equation for the pro
vovikov84 [41]

Answer:

1.5 moles

Explanation:

The equation of the reaction is given as:

2 MnO2 + 4 KOH + O2 --> 2KMnO 4 + 2KOH + H2

From the equation,

2 moles of MnO2 produces 2 moles of KMnO4

x moles of MnO2 would produce 1.5 moles of KMnO4

2 = 2

x = 1.5

Solving for x;

x = 1.5 * 2 / 2

x = 1.5 moles

4 0
3 years ago
Other questions:
  • How much co2 is realsed by burning trash
    7·1 answer
  • How sig figs are in 28.0
    12·2 answers
  • If water were a nonpolar molecule, how would its properties be different?
    10·1 answer
  • How do you figure out the number of protons, neutrons, and electrons in each of these isotopes? a. 6/3 Li, 7/3 Li b. 42/20 Ca, 4
    8·1 answer
  • There is a close relation between forest<br>and wildlife.​
    10·1 answer
  • Jana is modeling mutations using the word "FRIEND."
    14·1 answer
  • Which of the following reactions is an example of a single replacement reaction?
    14·1 answer
  • Hydrogen can be produced according to the following word equation
    12·1 answer
  • Help mee pleasee its urgent<br> ..<br> thank uuuu&lt;3
    11·2 answers
  • Can someone explain to me how to do Stoichiometry problems please
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!