All categories

3 years ago

Calculate the number of moles of solute in 16.55 mL of 0.1475 M M2Cr3O7

Chemistry

1 answer:

aliina [53]3 years ago

6 0

Number of moles of solute in 16.55 mL of 0.1475 M M2Cr3O7 is 0.00244 moles.

Explanation:

The properties and behavior of many solutions depend not only on the nature of the solute and solvent but also on the concentration of the solute in the solution. Molarity (M) is the concentration of a solution expressed as the number of moles of solute per liter of solution:

$Molarity = \frac{moles-solute}{lites-solution}$ ,

Here , $litres-solution = \frac{16.55}{1000} l = 0.01655l$ .

⇒ $Molarity = \frac{moles-solute}{lites-solution}$

⇒ $0.1475 = \frac{moles-solute}{0.01655}$

⇒ $moles-solute = 0.01655(0.1475)$

⇒ $moles-solute = 0.00244$

Therefore, Number of moles of solute in 16.55 mL of 0.1475 M M2Cr3O7 is 0.00244 moles.

You might be interested in

I am doing science, periodic table. what is an element that has 0 neutrons? I even searched online and it said that's not an ele

Trava [24]

Answer:

element hydrogen

Explanation:

There is only one stable atom that does not have neutrons, it is also an element hydrogen called protium. Protium, which contains a single proton and a single electron, is the simplest atom. Hope this helped!

8 0

3 years ago

The weight of 112 liters of carbon dioxide at STP would be 44.09. True or false?

marshall27 [118]

Answer:

False

Explanation:

Its false

3 0

3 years ago

A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water

sergejj [24]

Q unknown = -Q H2O
Q H2O= (100g x 4.18 J/g C x (25C - 20C)
Q H2O = 2090J

-2090J = (50g x c x (25C-90C)
-2090J = -3250c
.64 = c

I am a high school student and have done this problem a few months ago for my test, hope this helps

4 0

3 years ago

Read 2 more answers

When a strip of magnesium metal is placed in an aqueous solution of copper(II) nitrate, elemental copper coats the surface of th

Lera25 [3.4K]

Answer:

1. 2+ ( $Cu^{2+}$ ).

2. 0 ( $Cu^0$ ).

Explanation:

Hello,

In this case, the described chemical reaction is a redox reaction in fact, since the oxidation states of both magnesium and copper change as shown due to the displacement:

$Mg(s)+Cu(NO_3)_2(aq)\rightarrow Mg(NO_3)_2(aq)+Cu(s)$

Therefore:

1. Since copper is the cation in the copper (II) nitrate, the (II) means that its charge is 2+ ( $Cu^{2+}$ ).

2. Since copper is alone, it means no electrons are being neither shared not given, its charge is 0 ( $Cu^0$ ).

Best regards.

4 0

3 years ago

2Fe + 3Cl2 → 2FeCl3 which of the following options gives the correct reactant ratio?

Mademuasel [1]

Answer: The reactant ratio in the given chemical equation will be: $Fe:Cl_2=2:3$

Explanation:

Mole ratio is defined as the ratio of the amount of moles of two substances that are participating in a chemical reaction.

In the given chemical equation:

$2Fe+3Cl_2\rightarrow 2FeCl_3$

The reactants are Fe and $Cl_2$ and the product is $FeCl_3$

The mole ratio is basically the stoichiometric ratio of the chemical compounds taking part in a chemical reaction.

The mole ratio of reactants is stoichiometric ratio of Fe and $Cl_2$ , which is:

$Fe:Cl_2=2:3$

Hence, the reactant ratio in the given chemical equation will be: $Fe:Cl_2=2:3$

6 0

3 years ago