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
telo118 [61]
3 years ago
12

A 20.0 milliliter sample of 0.200 molar K₂CO₃ solution is added to 30.0 milliliters of 0.400 molar Ba(NO₃)₂ solution. Barium car

bonate precipitates. The concentration of barium ion, Ba₂, in solution after the reaction is _________.
Chemistry
1 answer:
sveticcg [70]3 years ago
6 0

Answer:

0.32M

Explanation:

<u>Step 1:</u>  Balance the reaction

K2CO3 + Ba(NO3)2 ⇔ KNO3 + BaCO3

We have a 20 mL 0.2 M K2CO3 and a 30mL 0.4M Ba(NO3)2 solution

SinceK2CO3 is the limiting reactant, there will remain Ba(NO3)2 after it's consumed and produced KNO3 + BaCO3

<u>Step 2: </u>Calculate concentration

To find the concentration of the barium cation we use the following equation:

Concentration = moles of the <u>solute</u> / volumen of the <u>solution</u>

<u />

<u>[Ba2+] </u> = (20 * 10^-3 * 0.2M + 30 * 10^-3 * 0.4M) / ( 20 + 30mL) *10^-3

[Ba2+] = 0.32 M

The concentration of Barium ion in solution is 0.32 M

You might be interested in
54
skelet666 [1.2K]

Answer:

less than 5 centimeters because it is a nonvascular plant

Explanation:

Mosses are a group of plants under the division Bryophyta. They are said to be the most primitive plant life in existence as they lack true roots, stems and leaves. They also lack vascular system, hence, they are regarded as non-vascular plants. They usually grow in very small sizes (about 0.2 - 10cm).

According to this question, Penny bought a club moss plant for her water garden and needs to know how tall the plant will grow so she know how much space it will need. Since it is a miss plant that lacks vascular tissues i.e. nonvascular, it will likely grow less than 5 centimeters in height.

7 0
2 years ago
Is MgS ionic or covalent
Keith_Richards [23]

Answer:

Ionic

Explanation:

Mg has 2 electron in it's outermost orbit, by donating this two electron to Sulfur it get stable mg 2+ electronic configuration while sulfur has 6 electron in it's outermost shell ,so sulfur accept this 2 electron and complete it's octet and become s2–.

6 0
3 years ago
Why is it important to learn about chemical reactions?
Eduardwww [97]

Answer:

Well they help us understand the properties of matter of course!

3 0
3 years ago
Read 2 more answers
A nugget of gold has a mass of 28 grams and a volume of 1.45 cubic centimeters. What is the density?
Travka [436]

Answer:

0.01931034

Explanation:

Steps:

ρ =  m/v

       =  

28 gram

1.45 cubic meter

=  19.310344827586 gram/cubic meter

=  0.019310344827586 kilogram/cubic meter

7 0
3 years ago
Elements in the 2nd family/group gain or lose electrons? *
Savatey [412]
They lose electrons
6 0
2 years ago
Other questions:
  • Students were asked to identify the location of elements in the
    9·1 answer
  • For the following reaction, it is found that doubling the amount of A causes the reaction rate to quadruple. Doubling the amount
    15·1 answer
  • How many tiny frogs sitting next to each other would measure the same length as a Blue Whale?
    7·2 answers
  • What is the house off Neutron​
    15·1 answer
  • Put the elements in order from the highest electronegativity at the top of your list, to the lowest at the bottom. Germanium (Ge
    6·1 answer
  • How many molecules are in the substance formula of 2C6H1206 (use coefficients)
    5·1 answer
  • How many atoms are there in 5K2CO3
    6·1 answer
  • I really need help please.
    8·1 answer
  • Why do we see different phases of the moon.
    14·2 answers
  • Which statement is true about word equations with regards to chemical reactions?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!