All categories

2 years ago

Find the mass of 0.456 mol of Ca(OH)2 Please if you can show the work.

Chemistry

2 answers:

Tatiana [17]2 years ago

6 0

<h2>Answer:</h2>

<h3><u>QUESTION)</u></h3>

A) Let's first calculate the molar mass M of the molecule :

M(Ca(OH)₂) = 40 + 2 x 16 + 2 x 1
M(Ca(OH)₂) = 74 g/mol

B) Let's deduct the corresponding mass m :

m = 74 x 0.456
m = 33.744 g
m ≈ 34,0 g

The mass of calcium hydroxide corresponding to this quantity of substance (in mol) is therefore 34 g.

m_a_m_a [10]2 years ago

3 0

Answer:

Ca(OH)2 molecular weight. Molar mass of Ca(OH)2 = 74.09268 g/mol. This compound is also known as Calcium Hydroxide. Convert grams Ca(OH)2 to moles or moles Ca(OH)2 to grams. Molecular weight calculation: 40.078 + (15.9994 + 1.00794)*2 ››

You might be interested in

Which of these is an indication that a chemical reaction has occurred?

nevsk [136]

Formation Of A Gas.

3 0

3 years ago

Write a nuclear equation to describe the spontaneous fission of 95 244 Am to form I-134 and Mo-107. Determine how many neutrons

MissTica

<u>Answer:</u> 3 neutrons are produced in the above nuclear reaction.

<u>Explanation:</u>

In a nuclear reaction, the total mass and total atomic number remains the same.

The nuclear reaction for the fission of Americium-244 isotope follows:

$^{244}_{95}\textrm{Am}\rightarrow ^{134}_{53}\textrm{I}+^{107}_{42}\textrm{Mo}+Y^1_0\textrm{n}$

<u>To calculate Y:</u>

Total mass on reactant side = total mass on product side

$\Rightarrow 244=134+107+(Y\times 1)\\\\\Rightarrow Y=244-241=3$

Hence, 3 neutrons are produced in the above nuclear reaction.

4 0

3 years ago

In an experiment, 3.25 g of NH3 are allowed to react with 3.50 g of O2. 4NH3 + 5O2 > 4NO + 6H2O a. Which reactant is the limi

cluponka [151]

Answer:

2.61 g of NO will be formed

The limiting reagent is the O₂

Explanation:

The reaction is:

4NH₃ + 5O₂ → 4NO + 6H₂O

We convert the mass of the reactants to moles:

3.25g / 17 g/mol = 0.191 moles of NH₃

3.50g / 32 g/mol =0.109 moles of O₂

Let's determine the limiting reactant by stoichiometry:

4 moles of ammonia react with 5 moles of oxygen

Then, 0.191 moles of ammonia will react with (0.191 . 5) / 4 = 0.238 moles of oxygen. We only have 0.109 moles of O₂ and we need 0.238, so as the oxygen is not enough, this is the limiting reagent

Ratio with NO is 5:4

5 moles of oxygen produce 4 moles of NO

0.109 moles will produce (0.109 . 4)/ 5 = 0.0872 moles of NO

We convert the moles to mass, to get the answer

0.0872 mol . 30g / 1 mol = 2.61 g

7 0

2 years ago

Identify the independent and dependent variables. Peter is conducting an experiment to see how much salt will dissolve in water

Vlad1618 [11]

Temperature is independent and the amount of salt dissolving in water is dependant. This is because the amount of salt dissolving depends on how low or high the water temperature is

6 0

3 years ago

Pls help with this

Natalka [10]

Hirlkrrkkrkrmmrrmmejekkeowoow

3 0

2 years ago