All categories

3 years ago

5.2 G of HCl are dissolved in 25 mL of solution. What is the molarity?

Chemistry

1 answer:

Kobotan [32]3 years ago

6 0

Answer:

0.21 M

Explanation:

Molarity is the calculation of the solution in which the number of solute per liter of the solutions. It is the most common measurement unit that is used to measure the concentration of the solution.

The molarity is the unit that is used to measure or calculate the volume of the solvent. The amount of solvent is used in the chemical reaction.

The amount of the two solvent in the same quantity is measured by the formula called c1v1 and c2v2.

You might be interested in

How do you know which element is the most reactive in the periodic table?

Snezhnost [94]

The most reactive metal in the periodic table (Cesium) with the most reactive non-metal (Fluorine).

3 0

3 years ago

What is the new mass/volume percent (m/v) of a KOH solution that is prepared by diluting 110 mL of a 6.0% (m/v) KOH solution to

denis-greek [22]

Answer:

The new mass/volume percent is 2.0% (m/v)

Explanation:

Dilution is a procedure by which the concentration of a solution is decreased, generally with the addition of a diluent. In other words, dilution is a process in which a concentrated solution is always started, to which a greater volume of solvent is added, causing the concentration and volume of the resulting solution to change. But the amount of solute used to prepare the initial solution remains the same.

The calculation of a dilution is made by:

Cinitial. Vinitial = Cfinal. Vfinal

where C indicates concentration and V indicates volume.

In this case:

Cinitial: 6.0% (m/v)
Vinitial: 110 mL
Cfinal: ?
Vfinal: 330 mL

Replacing:

6.0% (m/v) * 110 mL= Cfinal* 330 mL

Solving:

$Cfinal=\frac{ 6.0 (m/v)*110 mL}{330 mL}$

Cfinal= 2.0% (m/v)

The new mass/volume percent is 2.0% (m/v)

4 0

3 years ago

A compound found in the athletes urine had a percent composition of 80.8% carbon, 8.97% hydrogen and 10.3% oxygen. What is the E

mojhsa [17]

Answer:

C21H2802

Explanation:

C=12g/mol

H=1g/mol

O=16g/mol

Part (C) of compound-80.18%

(0.8018 x 312)/12=21

Part (H) of compound-8.97%

(0.897 x 312)/1=28

Part (O) of compund-10.3%

(0.103 x 312)/16 = 2

Therefore the emp. formula is C12H28O2

8 0

3 years ago

Levart [38]

Answer:

Explanation:

Friction is a force that opposes motion.

5 0

3 years ago

Compared to an atom of phosphorus-31, an atom of sulfur-32 contains

HACTEHA [7]

Phosphorus has 1 less proton and electron than sulfur in this case because remember the amount of protons are equal to the amount of electrons in the element.

7 0

3 years ago