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
ladessa [460]
3 years ago
7

3) A solution contains 61.3 moles of KC103 in 0.25 L of solution. What is the

Chemistry
1 answer:
marissa [1.9K]3 years ago
6 0

Answer:

The molarity of the solution is 245, 2M.

Explanation:

We calculate the molarity, which is a concentration measure that indicates the moles of solute (in this case KCl03) in 1000ml of solution (1 liter):

0,25 L  solution----- 61,3 moles of KCl03

1 L solution----x= (1 L solution x 61,3 moles of KCl03)/0,25 L solution

x=245, 2 moles of KCl03 --> <em>The molarity of the solution is 245, 2M</em>

<em></em>

You might be interested in
Most ionic compounds tend to be classified as Select one:
Dovator [93]
Most ions tend to be D. Salts. Hope this helps!
5 0
3 years ago
Read 2 more answers
What is the scientific name for the output variable
amm1812

Answer:

Coefficient

Explanation:

I am not that sure, but just wanted to help.

4 0
3 years ago
In 450 BCE, Greek philosopher Democritus first thought of the existence
trasher [3.6K]

Answer:

A. Invisible

Explanation:

3 0
4 years ago
How many atoms are in Sodium, Carbon, Hydrogen, Oxygen, Fluorine, Boron, Lithium, Helium, Phosphorus and Sulfur?
vlada-n [284]
Sodium. 11
Carbon. 12
Hydrogen 1
Oxygen 2
Fluuorine. 14
Boron. 5
Lithium. 6
Helium 3
Phosphorus 15
Sulfur 6
6 0
4 years ago
A goldsmith melts 12.4 grams of gold to make a ring. The temperature of the gold rises from 26°C to 1064°C, and then the gold me
DiKsa [7]

Problem One

You will use both m * c * deltaT and H = m * heat of fusion.

Givens

m = 12.4 grams

c = 0.1291

t1 = 26oC

t2 = 1204

heat of fusion (H_f) = 63.5 J/grams.

Equation

H = m * c * deltaT + m * H_f

Solution

H = 12.4 * 0.1291 * (1063 - 26) + 12.4 * 63.5

H = 1660.1 + 787.4

H = 2447.5 or 2447.47 is the exact answer. I have to leave the rounding to you. I have no idea where to round it although I suspect 2450 would be right for 3 sig digs.

Problem Two

Formula and Givens

t1 = 14.5

t2 = 50.0

E = 5680

c = 4.186

m = ??

E = m c * deltaT

Solution

5680 = m * 4.186 * (50 - 14.5)

5680 = m * 4.186 * (35.5)

5680 = m * 148.603 * m

m = 5680 / 148.603

m = 38.22 grams That isn't very much. Be very sure you are working in joules. You'd leave that many grams in the kettle after drying it thoroughly.

m = 38.2 to 3 sig digs.

8 0
4 years ago
Read 2 more answers
Other questions:
  • If the crust of the Earth is thin and can be ruptured, a ________ can form. A.landslide
    14·1 answer
  • When a heavy football player and a light one run into each other, which player hits the other with
    10·1 answer
  • Correct first answer= Brianliest!PLEASE WOULD REALLY APPRECIATE IF YOU’D HELP ME OUT:’(
    13·1 answer
  • Help? I missed 3 days of school ;-;
    9·2 answers
  • 2. In a concentrated solution there is _____. (1 point)
    15·2 answers
  • How many gram of fe in feno3​
    9·2 answers
  • How many grams of salt are in 5 L of a solution with a concentration of 3 g/L
    8·1 answer
  • Which metal can replace another metal in a reaction?
    12·1 answer
  • Which force is expected to cause a body to accelerate?
    15·1 answer
  • if you ride your bike around the block, returning to the exact point where you started, your displacement is ____m?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!