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Sedaia [141]
3 years ago
10

Para la siguiente reacción: 2NH 3(g) + CO 2(g) ———> (NH 2 ) 2 CO (l) + H 2 O (l) a) ¿Cuántos gramos de NH 3 se necesitan para

formar 720 g de (NH 2 ) 2 CO? b) ¿Cuántos moléculas de agua se obtienen a partir de 9 litros de CO 2 ayudenme porfa
Chemistry
1 answer:
Paraphin [41]3 years ago
8 0

Answer:

a. 408g de NH3 son necesarios

b. 2.42x10²³ moléculas de agua se obtienen

Explanation:

a. Basados en la reacción, 2 moles de NH3 producen una mol de (NH2)2CO. Para resolver esta pregunta debemos convertir la masa de (NH2)2CO a moles. Estas moles a moles de NH3 y su respectiva masa:

<em>Moles (NH2)2CO -Masa molar: 60.06g/mol-</em>

720g * (1mol / 60.06g) = 11.99 moles (NH2)2CO

<em>Moles NH3: </em>

11.99 moles (NH2)2CO * (2mol NH3 / 1mol (NH2)2CO) = 23.98 moles NH3

<em>Masa NH3 -17.031g/mol-:</em>

23.98 moles NH3 * (17.031g / mol) = 408g de NH3 son necesarios

b. 1mol de CO2 produce  1mol de agua. Se debe convertir el volumen a moles usando PV = nRT. Estas moles = Moles de agua. 1mol = 6.022x10²³ moléculas:

Asumiendo STP:

PV = nRT; PV / RT = n

Donde P = 1atm a STP

V = 9L

R = 0.082atmL/molK

T = 273.15K a STP

1atm*9L / 0.082atmL/molK*273.15K = n

n = 0.402 moles CO2 = Moles H2O

<em>Moléculas:</em>

0.402 moles agua * (6.022x10²³ moléculas / 1mol) =

<h3>2.42x10²³ moléculas de agua se obtienen</h3>
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tresset_1 [31]

Answer:

1 mole of atoms contains 6.022×1023 atoms. Thus, 0.2 mole of sodium element has 12.044×1022 atoms in it.

Explanation:

8 0
3 years ago
Changing the number of protons in an atom would change which of the following ? Choose all that apply A. Atomic mass B. The iden
swat32

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A and B

Explanation:

7 0
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Calculate the concentration of hydrochloric acid if 50.0 mL of hydrochloric acid is neutralized by 25.0 mL of 2.0 M sodium hydro
Arisa [49]

Answer:

1.0M HCl is the concentration of the acid

Explanation:

Based on the reaction, 1 mole of NaOH reacts per mole of HCl. That means the moles added of NaOH in the neutralization = Moles of HCl in the solution. With the moles and the volume in Liters we can find the molar concentration of HCl

<em>Moles NaOH = Moles HCl:</em>

25.0mL = 0.025L * (2.0moles / L) = 0.050moles HCl

<em>Molarity:</em>

0.050moles HCl / 0.0500L =

<h3>1.0M HCl is the concentration of the acid</h3>
6 0
3 years ago
How many moles of NH3 are produced in the reaction of 3.3 moles of N2?<br> N2 + 3H2 = 2NH3
enot [183]

Answer:

6.6 moles of NH3

Explanation:

3.3 mol N2 * (2 mol NH3/ 1 mol N2) = 6.6 mol NH3

6 0
2 years ago
HELP ASAP!!!
Scorpion4ik [409]
<h3>Answer:  A) 3.5 mol/L</h3>

Explanation:

To determine the molarity, we have to find the number of moles in the volume given, and then extrapolate to find the number of moles that would be in 1 L.

<u>Determine the moles in the given volume</u>

moles of LiCl = mass ÷ molar mass

                       = 139.9 g ÷ 42.39 g/mol

                       = 3.30 mol

<u>Find the moles in 1 L</u>

    Since 930 mL of LiCl    =   3.30 mol

    then 1000 mL of LiCl    =   (3.30 mol × 1000 mL/L) ÷ 930 mL

                                           =  3.55 mol/L

4 0
2 years ago
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