All categories

3 years ago

What is the mass, in grams, of solute in 255mL of a 0.0525M solution of KMnO4 (MM =

Chemistry

1 answer:

Murljashka [212]3 years ago

4 0

Answer:

Mass = 2.12 g

Explanation:

Given data:

Volume of KMnO₄ = 255 mL (255/1000 = 0.255 L)

Molarity = 0.0525 M

Mass in gram = ?

Solution:

First of all we will calculate the number of moles.

<em>Molarity = number of moles of solute / volume in litter</em>

0.0525 M = number of moles of solute / 0.255 L

Number of moles of solute = 0.0525 M ×0.255 L

Number of moles of solute = 0.0134 mol

Mass in gram:

<em>Number of moles = mass/ molar mass</em>

Mass = moles × molar mass

Mass = 0.0134 mol × 158.04 g/mol

Mass = 2.12 g

You might be interested in

A 10-ft moving truck has a volume capacity of 402 cubic feet, which is equivalent to 1.138 x 10⁷ milliliters. What mass of silve

steposvetlana [31]

Answer:

The mass of silver is $1.19\times 10^{14}\ Mg$

Explanation:

Given that,

The volume of the truck is 402 cubic feet or 1.138 x 10⁷ mm.

The density of silver is 10.49 g/mL.

We need to find the mass of silver that will fit in this moving truck. Density equals mass divided by volume. So,

$d=\dfrac{m}{V}\\\\\text{where m is mass}\\\\m=d\times V\\\\m=10.49\ g/mL\times 1.138 \times 10^7\ mL\\\\m=119376200\ g$

1 gram = 10⁻⁶ Megagram

$119376200=1.19\times 10^{14}\ Mg$

Hence, the mass of silver is $1.19\times 10^{14}\ Mg$

4 0

3 years ago

Why does an increase in reaction temperature generally increase the reaction rate?

zalisa [80]

Answer:

This is because an increase in temperature increases the movement of molecules/particles of reactants which encourages collision and subsequently, reaction.

5 0

3 years ago

Read 2 more answers

This is like 40 points!! Pls help.

abruzzese [7]

Answer:

When meteoroids enter Earth's atmosphere (or that of another planet, like Mars) at high speed and burn up, the fireballs or “shooting stars” are called meteors. When a meteoroid survives a trip through the atmosphere and hits the ground, it's called a meteorite.

Explanation:

4 0

1 year ago

What is the molarity of a solution that contains 11.6 moles of LiNO3 in 13.7 liters of solution?

Tatiana [17]

The molarity of this should be around 0.846

-----

Formula: M= mols/liters

-----

So… M= 11.6/13.7⇒ 0.846

-----

6 0

2 years ago

The elementary gas-phase reaction takes place isobarically and isothermally in a PFR where 63.2% conversion is achieved. The fee

a_sh-v [17]

Answer:

Explanation:

check below for explanation in the attached files.

6 0

3 years ago