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
Aleks04 [339]
2 years ago
6

8.5 g of rubidium are reacted completely with water.

Chemistry
1 answer:
juin [17]2 years ago
5 0

Answer:

0.040M RbOH

Explanation:

The reaction of Rb with water is:

2Rb + 2H₂O → 2RbOH + H₂

As 2 moles of rubidium produce 2 moles of rubidium hydroxide, we need to find the moles of rubidium added. With these moles and the volume we can find molar concentration of RbOH as follows:

<em>Moles Rb = Moles RbOH -Molar mass Rb = 85.4678g)</em>

8.5g * (1mol / 85.4678g) = 0.099 moles RbOH

As 1dm³ = 1L, the volume in liters is 2.5L

That means molarity is:

0.099 moles RbOH / 2.5L =

<h3>0.040M RbOH</h3>

You might be interested in
When 3.00 g of sulfur are combined with 3.00 g of oxygen, 6.00 g of sulfur dioxide (SO2) are formed. What mass of oxygen would b
Drupady [299]
Actually, we can answer the problem even without the first statement. All we have to do is write the reaction for the production of sulfur trioxide.

2 S + 3 O₂ → 2 SO₃

The stoichiometric calculations is as follows:

7 g S * 1 mol/32.06 g S = 0.218 mol S
Moles O₂ needed = 0.218 mol S * 3 mol O₂/2 mol S = 0.3275 mol O₂
Since the molar mas of O₂ is 32 g/mol,
Mass of O₂ needed = 0.3275 mol O₂ * 32 g/mol = 10.48 g O₂
3 0
3 years ago
Which planetary body was opportunity designed to explore?
11111nata11111 [884]
The rover was designed to explore A.Mars
3 0
3 years ago
What negative impact did chemistry have on society through the production and use of chlorofluorocarbons (CFCs)?
andrey2020 [161]
<span>The answer to your question is the 3rd option </span>
6 0
3 years ago
Read 2 more answers
What are the different between alpha , beta , gamma rays ​
vovikov84 [41]

Answer:

Alpha is when you are the leader of the pack. Beta is the weaker but can become alpha by killing th ealpha.

Explanation:

4 0
3 years ago
Metallic bonding occurs between atoms of
Pavel [41]

Answer:

Metallic bonding occurs when you have a metal in the solid or liquid state. The s and p valence electrons of metals are loosely held. They leave their “own” metal atoms. This forms a "sea" of electrons that surrounds the metal cations.

Explanation:

4 0
3 years ago
Other questions:
  • A gas of 190 mL at a pressure of 74 atm can be expected to change its pressure when its volume changes to 30.0 mL. Express its n
    15·2 answers
  • What color is 410 nm
    14·2 answers
  • Did an oxidation-reduction reaction occur in the reaction between copper sulfate and sodium sulfide?
    13·2 answers
  • Help me out please due tomorrow
    9·2 answers
  • HURRY ANSWER NOW AND I GIVE BRAINLY!!! HURYYY
    13·1 answer
  • How do S waves move through the earth?
    10·1 answer
  • In what way is psychology connected to the natural sciences and different than other social sciences?
    6·1 answer
  • True or False - Changing the temperature will not affect the pressure of the mixture?
    6·2 answers
  • 5. The heat of fusion of ice is 333.5J/g. The entropy change for the water when freezing 5.0 g of water at 0°C
    9·1 answer
  • HELP ITS DUE IN 5 MINS PLSSS Name at least one negative affect that is the result of clearing areas of a rainforest.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!