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3 years ago

If you had 6 moles of CaCl2 and 5 moles of Na3PO4, which of these would be the limiting and excess reactant

Chemistry

1 answer:

faltersainse [42]3 years ago

8 0

Answer:

Na3PO4 is excess reactant, CaCl2 is limiting reactant.

Explanation:

3CaCl2 + 2Na3PO4 ---> Ca3(PO4)2 + 6NaCl

from reaction : 3 mol 2 mol

given: 6 mol 5 mol (X)

X = (6*2)/3 = 4 mol Na3PO4

For 6 mol CaCl2 we need 4 mol Na3PO4, but we have 5 mol Na3PO4,

Na3PO4 is excess reactant, so CaCl2 is limiting reactant.

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Which of the following is a combustion reaction

natima [27]

I didnt see the answers for answer your question

5 0

3 years ago

Read 2 more answers

Why are metallic crystals malleable and ductile? A. The electrons are free floating, allowing them to move with the atoms when t

jok3333 [9.3K]

Answer:

D. The atoms are arranged with alternating positive and negative charges. When struck, the lattice shifts putting positives against positives and negatives against negatives.

Explanation:

Metallic crystals takes their properties as a result of metallic bonds in between the atoms.

Metallic bond is actually the attraction between the positive nuclei of all the closely packed atoms in the lattice and the electron cloud jointly formed by all the atoms by losing their outermost shell electrons this is by virtue of their low ionization energy.

Physical properties of metals such as malleability, ductility, electrical conductivity, etc can be accounted for by metallic bonds.

7 0

4 years ago

I point

Mrrafil [7]

The ionization constant equation is:

$K_{w}$ =1.0 × $10^{-14}$ at 25°C

the option is 1.

Explanation:

Sometimes in pure water one proton of the water molecule(hydrogen ion) will get attracted to the lone pairs present in another water molecule.This causes the hydrogen ion to leave the present water(leaving the $OH^{-}$ behind) molecule ad gets attached to another water molecule leading to the formation of the hydronium ion( $H^{3} O{+}$ ,hydronium ion).

This process is called auto-ionization of water because the water molecule ionizes into $H^{+}$ and $OH^{-}$ ions.

As such the equilibrium constant,which is measure of concentration of products to concentration of reactants,will be very slow.

∴the ionization constant of water at 25°C is 1.0 × $10^{-14}$ .

(i.e.)option c is correct answer [ $H^{+}$ ]=[ $OH^{-}$ ]

4 0

4 years ago

What is the mass, in grams, of 1.50 mol of iron (III) sulfate? Express your answer using three significant figures. mm = nothing

Paul [167]

Answer:

For A: The mass of iron (III) sulfate is 600. g

For B: The moles of ammonium carbonate is 0.07216 moles

For C: The mass of given number of molecules of aspirin is 0.359 grams.

For D: The molar mass of diazepam is 284.7 g/mol

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For A:

We are given:

Number of moles of iron (III) sulfate = 1.50 mol

Molar mass of iron (III) sulfate = 399.9 g/mol

Putting values in equation 1, we get:

$1.50mol=\frac{\text{Mass of iron (III) sulfate}}{399.9g/mol}\\\\\text{Mass of iron (III) sulfate}=(1.50mol\times 399.9g/mol)=600.g$

Hence, the mass of iron (III) sulfate is 600. g

For B:

We are given:

Mass of ammonium carbonate = 6.935 g

Molar mass of ammonium carbonate = 96.1 g/mol

Putting values in equation 1, we get:

$\text{Moles of ammonium carbonate}=\frac{6.935g}{96.1g/mol}=0.07216mol$

Hence, the moles of ammonium carbonate is 0.07216 moles

For C:

We are given:

Number of aspirin molecules = $1.20\times 10^{21}$

Mass of 1 mole of aspirin = 180.16 g/mol

According to mole concept:

$6.022\times 10^{23}$ number of molecules occupies 1 mole

So, $6.022\times 10^{23}$ number of molecules of aspirin has a mass of 180.16 grams

Thus, $1.20\times 10^{21}$ number of molecules of aspirin will have a mass of $\frac{180.16g}{6.022\times 10^{23}}\times 1.20\times 10^{21}=0.359g$

Hence, the mass of given number of molecules of aspirin is 0.359 grams.

For D:

We are given:

Moles of diazepam = 0.05570 mol

Given mass of diazepam = 15.86 g

Putting values in equation 1, we get:

$0.05570mol=\frac{15.86g}{\text{Molar mass of diazepam}}\\\\\text{Molar mass of diazepam}=\frac{15.86g}{0.05570mol}=284.7g/mol$

Hence, the molar mass of diazepam is 284.7 g/mol

6 0

3 years ago

In a spacecraft, this reaction occurs:

viva [34]

Volume of carbon dioxide absorbed = 33.6 L ≈ 34 L

Explanation:

We have the following chemical reaction:

CO₂ (g) + 2 LiOH (s) → Li₂CO₃ (s) + H₂O (l)

Now we devise the following reasoning:

if 1 mole of carbon dioxide reacts with 2 moles of lithium hydroxide

then X moles of carbon dioxide reacts with 3 moles of lithium hydroxide

X = (1 × 3) / 2 = 3/2 moles of carbon dioxide

And we calculate the volume of carbon dioxide using the following formula:

number of moles = volume / 22.4

volume = number of moles × 22.4

note: units for 22.4 are "L / mole"

volume of carbon dioxide = (3/2) × 22.4 = 33.6 L ≈ 34 L

Learn more about the reaction of carbon dioxide with metal hydroxides:

brainly.com/question/6979534

brainly.com/question/4316721

#learnwithBrainly

8 0

4 years ago