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2 years ago

What number of moles of O2(g) is required to react with 3.6 mol SO2(g) in the following

Chemistry

1 answer:

goldfiish [28.3K]2 years ago

8 0

Answer:

first balance the equation:

2SO2+O2=2SO3. BALANCED EQUATION

find the ratio:

2:1:2. SO2:O2:SO3

5.0 moles of SO2 React

1/2×5.0 moles=2.5moles of O2 are needed

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Why is plastic not classified as a composite?

pantera1 [17]

As in math or
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4 0

3 years ago

1.You have three elements, A, B, and C, with the following electronegativity values:

Anna [14]

A ) AB is a compound . Ionic compound because the electronegativity differs a lot in both !

B) Same

C ) Compound . But the bond between them is covalent .

D ) AB is an ionic compound . A is the cation and B is the anion

4 0

3 years ago

For the reaction shown, calculate how many moles of NH3 form when 16.72 moles of reactant completely reacts:

Agata [3.3K]

Answer : The moles of $NH_3$ formed are, 22.3 moles.

Explanation : Given,

Moles of $N_2H_4$ = 16.72 mol

The given chemical reaction is:

$3N_2H_4(l)\rightarrow 4NH_3(g)+2N_2(g)$

From the balanced chemical reaction, we conclude that:

As, 3 moles of $N_2H_4$ react to give 4 moles of $NH_3$

So, 16.72 moles of $N_2H_4$ react to give $\frac{4}{3}\times 16.72=22.3$ moles of $NH_3$

Therefore, the moles of $NH_3$ formed are, 22.3 moles.

8 0

3 years ago

What is the specific heat capacity of an unknown metal if 75.00 g of the metal absorbs 418.6J of heat and the temperature rises

EleoNora [17]

Answer:

The specific heat capacity of the unknown metal is 0.223 $\frac{J}{g*C}$

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

There is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Q= 418.6 J
c= ?
m= 75 g
ΔT= 25 C

Replacing:

418.6 J= c* 75 g* 25 C

Solving:

$c=\frac{418.6 J}{75 g*25 C}$

c= 0.223 $\frac{J}{g*C}$

The specific heat capacity of the unknown metal is 0.223 $\frac{J}{g*C}$

3 0

3 years ago

For an aqueous solution of hf, determine the van't hoff factor assuming 0% and 100% ionization, respectively. a solution is made

Snowcat [4.5K]

According to Osmotic pressure equation:

π = i M R T

When π =0.307 atm & M = 0.01 mol & R (constant)= 0.0821 L-atom/mol-K &
T= 22+273 = 295 Kelvin

So Van't half vector i = π / (MRT)
= 0.307 / (0.01 * 0.0821 * 295)
= 1.27

When there is no dissociation, i = no. of moles of Hf in 1 L of solution = (1-X)
and when there is a complete dissociation so it is equal 2X according to this equation

HF(aq) + H2O (L) ⇆ H3O (aq) + F (aq)
(1-X) X X

∴ i = (1-X) + (2x)

1.27 = 1+X
∴X= 1.27 - 1 = 0.27
∴ the percent ionization of the acid X = 27 %

7 0

3 years ago