Unless otherwise instructed, you may use the periodic table in the Chemistry: Problems and Solutions

For the equilibrium, N2O4(g)<----> 2NO2(g), the equilibrium constant Kp = 0.316. Calculate the equilibrium partial pressur

saveliy_v [14]

The equilibrium reaction is

N2O4(g)<----> 2NO2(g)

For reaction

Kp = (pNO2)^2 / pN2O4

Given:

Kp = 0.316

pN2O4 = 3.48 atm

To calculate

pNO2 = ?

0.316 = (pNO2)^2 / 3.48

(pNO2)^2 = 1.0997

pNO2 = 1.049 atm

5 0

3 years ago

Read 2 more answers

A compound is 2. 00% H by mass, 32. 7% S by mass, and 65. 3% O by mass. What is its empirical formula? The final step is to use

LekaFEV [45]

The empirical formula of this compound is $H_2SO_4$

Given the following data:

Percentage of H = 2.00%

Percentage of S = 32.7%

Percentage of O = 65.3%

Scientific data:

Molar mass of hydrogen (H) = 1.0 g/mol.

Molar mass of sulfur (S) = 32 g/mol.

Molar mass of oxygen (O) = 16 g/mol.

To determine the empirical formula of this compound:

Note: We would assume that the mass of the compound is 100 grams.

Hence, the mass of its constituent elements are:

Mass of hydrogen (H) = 2.00 grams

Mass of sulfur (S) = 32.7 grams

Mass of oxygen (O) = 65.3 grams

Next, we would determine the number of moles of each element by using this formula:

$Number\;of\;moles = \frac{mass}{molar\;mass}$

For hydrogen (H):

$Number\;of\;moles = \frac{2.00}{1}$

Number of moles = 2.0 moles

For sulfur (S):

$Number\;of\;moles = \frac{32.7}{32}$

Number of moles = 1.0 moles

For oxygen (O):

$Number\;of\;moles = \frac{65.3}{16}$

Number of moles = 4.0 moles

Empirical formula = $H_2SO_4$

3 0

2 years ago

andreyandreev [35.5K]

The best answer would be answer B. "the atom has a cloud of positive charge....."

4 0

4 years ago

Definition for starch in science ?

Akimi4 [234]

Answer:

Starch is a polysaccharide comprising glucose monomers joined in α 1,4 linkages. or
Starch is a long-chain polymer of glucose molecules joined together. or
A starch is a complex polysaccharide made up of a large number of glucose units joined together by glycosidic bonds.

Explanation:

starch, a white, granular, organic chemical that is produced by all green plants. Starch is a soft, white, tasteless powder that is insoluble in cold water, alcohol, or other solvents.

Starch is amongst the most abundant plant products and is a mixture of two polymers, amylose and amylopectin. During food processing starch is transformed by hydrothermal treatments. ... The structure of starch is also influenced by specific and non-specific interactions with other food constituents and ingredients.

5 0

3 years ago

1. Complete the reaction illustrating the hydration reaction of a strong electrolyte CaCl2

makkiz [27]

Answer:

CaCl₂(s) ⟶ Ca²⁺(aq) + 2Cl⁻(aq)

Explanation:

When the calcium chloride dissolves. the calcium and chloride ions leave the surface of the solid and go into solution as hydrated ions.

8 0

4 years ago