All categories

2 years ago

How many liters of water need to be added to 0.5 moles of CaCl2 to make a 0.20 M solution of CaCl2?

Chemistry

1 answer:

vlabodo [156]2 years ago

4 0

Answer:

2.5M

Explanation:

Molarity is the measure of the molar concentration of a solution. It is calculated using the formula below:

Molarity = n/V

Where;

n = number of moles (mol)

V = volume (L)

According to the information about Calcium chloride (CaCl2) provided in this question;

n = 0.5moles

M = 0.20M

Molarity = 0.5/0.2

Molarity = 2.5M

You might be interested in

Does the volume change if a ballon is put in a freezer

Lorico [155]

It gets smaller so yes

6 0

2 years ago

A solution has a hydrogen ion concentration of 0.001 M, what is the pH of the solution

LenKa [72]

PH= −log
10

[H
+
]
= −log
10

(0.001)
= −log
10

(10
−3
)
= −(−3)log
10

10
pH=3.
01

4 0

2 years ago

Which TWO scientist proposed an atomic model with a nucleus.

Zina [86]

Answer:

A. Rutherford and Bohr

Explanation:

I think this is right but I am not sure it has been a while since i read about them

7 0

2 years ago

भारत के एक ही राज्य में लगातार सबसे लंबे समय तक

IgorLugansk [536]

Answer:

Explanation:

6 0

2 years ago

Consider the following mechanism.

solong [7]

Answer :

(a) The overall equation is:

$ClO^-(aq)+I^-(aq)\rightarrow Cl^-(aq)+IO^-(aq)$

(b) The intermediates are :

$OH^-(aq),HClO(aq)\text{ and }HIO(aq)$

Explanation :

(1) $ClO^-(aq)+H_2O(l)\rightarrow HClO(aq)+OH^-(aq)$ (fast)

(2) $I^-(aq)+HClO(aq)\rightarrow HIO(aq)+Cl^-(aq)$ (slow)

(3) $OH^-(aq)+HIO(aq)\rightarrow H_2O(l)+IO^-(aq)$ (fast)

By adding the three equations and cancelling the common terms on both side, we will get the overall equation.

$ClO^-(aq)+I^-(aq)\rightarrow Cl^-(aq)+IO^-(aq)$

Intermediates are generated and consumed in the mechanism and do not include in the overall equation.

Since, intermediates will not include in the overall mechanism.

The intermediates are :

$OH^-(aq),HClO(aq)\text{ and }HIO(aq)$

7 0

2 years ago