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
lara31 [8.8K]
3 years ago
7

When heated, KClO3 decomposes into KCl and O2. If this reaction produced 88.4 g of KCl, how much O2 was produced (in grams)? 2KC

lO_3--->2KCl+3O_2. A) 2(KClO_3)=245.096 B) 2KCl=149.102g C) 3O_2=95.995
Chemistry
1 answer:
adoni [48]3 years ago
5 0
<span>Mass of KCl=          88.4g 
</span>Molar mass of KCl=39+35.5 
<span>                                =74.5 
</span><span> The Moles of KCl= 88.4/74.5
</span>                            =1.186
<span>If for  the 2 moles of KCl there are 3 moles of oxygen
</span>so

<span>1 mole of KCl will  give=3/2=1.5 moles of oxygen 
</span>
<span>1.186 moles of KCl will give =1.5*1.186=1.779 oxygen
</span><span>32 the molar mass of oxygen
</span>so its mass will be
<span>1.779 *32=56.928
</span>enjoy
You might be interested in
Pickles are cucumbers preserved in a brine solution containing dill, alum, and salt. Cucumbers shrink to a fraction of their nor
Anna [14]

Answer:

hypertonic solution

Explanation:

Hypertonic solution -

It is the solution, with more amount of solute than the solvent , is known as hypertonic solution.

Now, is some substance is immersed in such solution , the substance gets shrinked , because , the solvent from the substance moves out of it and moves to the hypertonic solution.

Hence, the pickles gets shrinked up , as they put in a hypertonic solution.

8 0
3 years ago
Waves move fastest in
Arturiano [62]
The correct answer is high temperature solids
6 0
3 years ago
Read 2 more answers
Calculate the number of kilojoules of energy required to convert 50.0 grams of solid DMSO initially at a temperature of 19.0°C t
GuDViN [60]

Answer:

20.79 kilojoules

Explanation:

Using Q = m×c×∆T

Where;

Q = Quantity of heat (J)

c = specific heat capacity of solid DMSO (1.80 J/g°C)

m = mass of DMSO

∆T = change in temperature

According to the provided information, m= 50g, initial temperature = 19.0°C, final temperature= 250.0°C

Q = m×c×∆T

Q = 50 × 1.80 × (250°C - 19°C)

Q = 90 × 231

Q = 20790 Joules

To convert Joules to kilojoules, we divide by 1000 i.e.

20790/1000

= 20.79 kilojoules

Hence, 20.79 kilojoules of energy is required to convert 50.0 grams of solid DMSO to gas.

4 0
2 years ago
How much atomic mass does Osmium have
svp [43]

Answer:

190.23g

Explanation:

Osmium is element number 76 on the periodic table, with the atomic symbol "Os." The atomic mass of any element is listed underneath the atomic symbol. Osmium has an atomic mass of 190.23 grams.

8 0
3 years ago
Which statetment provides the best explanation of where traits come from?
goldfiish [28.3K]

the traits or characteristics we have, is aquired from both parents, so

correct option is :

D: Genes inherited from both parents

3 0
2 years ago
Other questions:
  • What happens when an electron moves from the first energy level to the second?
    11·1 answer
  • 2. List elements that need 3 electrons to have a stable outer shell.
    5·1 answer
  • HClO3 + NH3 Right arrow. NH4+ + ClO3– Which is a base-conjugate acid pair?
    7·1 answer
  • Concentrated hydrochloric acid has a molarity of 6.0 M. How many mL of HCI must be used to make 500.0 mL of 2.0 M Hydrochloric a
    12·1 answer
  • "Pure acetic acid (HC2H3O2) is a liquid and is known as glacial acetic acid. Calculate the molarity of a solution prepared by di
    11·1 answer
  • Consider the following balanced equation: 5O2(g) + C3H8(g) → 3CO2(g) + 4H2O(l) If 24.9 moles of O2(g) and 6.85 moles of C3H8(g)
    5·1 answer
  • Something that an animal does that is driven by instinct is called a??
    6·2 answers
  • In the atmosphere, it is more common to find two oxygen molecules joined together than to find a single atom of oxygen. Why? Wha
    12·1 answer
  • The Kₐ of carbonic acid is 4.3 x10⁻⁷ . H₂CO₃ ⇄ H⁺ + HCO₃ ⁻ This means that H₂CO₃ is a
    15·1 answer
  • Alex is 1.67 meters tall. His
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!