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Gelneren
11 days ago
13

A sample of H2SO4 contains 2.02 g of hydrogen, 32.07 g of sulfur, and 64.00 g of oxygen. How many grams of sulfur and grams of o

xygen are present in a second sample of H2SO4 containing 7.27g if hydrogen
Chemistry
1 answer:
VMariaS [1K]11 days ago
7 0
Analyzing the formula for sulfuric acid reveals the molar proportions:

H: S: O
2: 1: 4

Next, we need to convert the provided mass of hydrogen into moles, calculated by:

Moles = mass / Mr
Moles = 7.27 / 1
Moles = 7.27

Thus, the number of moles for each element are:

S = 7.27 / 2 = 3.64 moles
O = 7.27 * 2 = 14.54 moles

Subsequently, the masses for sulfur and oxygen are:
S = 32 * 3.64 = 116.48 grams
O = 16 * 14.54 = 232.64 grams 
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a movable chamber has a volume of 18.5 L (at temperature of 18.5 C) assuming no gas escapes and the pressure remains constant wh
VMariaS [1037]

Answer:

39 ^\circ C

Explanation:

We have:

V₁ = 18.5 L

T₁ = 18.5° C = 273 + 18.5 = 291.5 K

V₂ = 19.8 L

T₂ =?

Pressure remains constant

Applying the ideal gas law

\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}

\dfrac{18.5}{291.5}=\dfrac{19.8}{T_2}

T_2 = 312 K

T_2 = 312 -273 =39 ^\circ C

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11 days ago
A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is
castortr0y [923]

Answer: The overall width of a crystal measures 1.65 mm.

Explanation:

Horizontal distance separating the two molecules is 16.5 nm.

Width of the 10^5 molecules:16.5 nm\times 10^5=16.5\times 10^5 nm

1 nm=10^{-6} mm

The overall width of a crystal measured in millimeters=16.5\times 10^5\times 10^{-6} mm=1.65 mm

The overall width of a crystal is 1.65 mm.

7 0
11 days ago
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No amino acid molecule by itself can speed up or catalyze reactions between other molecules; however, when amino acids are joine
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Answer:

This indicates that the enzyme is a type of protein.

Explanation:

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However, when they form a polymer, the protein enzyme will possess varying shapes, sizes, and both physical and chemical attributes differing from a single monomer.

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4 days ago
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During which time interval does the substance exist as both a liquid and a solid
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4 days ago
An experimental drug, D, is known to decompose in the blood stream. Tripling the concentration of the drug increases the decompo
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Answer:

The rate law for the decomposition reaction is:

R=k[D]^2

The unit for the rate constant will be M^{-1}s^{-1}

Explanation:

D\rightarrow Product

The rate law can be expressed as:

R=k[D]^x..[1]

When the drug concentration is tripled, the decomposition rate rises by a factor of nine.

[D]'=3[D]

R'=9\times R

R'=k[D]'^x...[2]

[1] ÷ [2]

\frac{R}{R'}=\frac{k[D]^x}{k[D']^x}

\frac{R}{9R}=\frac{k[D]^x}{k[3D]^x}

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Solving for x results in:

x = 2.

This indicates a second-order reaction.

The decomposition reaction's rate law is:

R=k[D]^2

The unit for the rate constant will be:

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The unit for the rate constant will be M^{-1}s^{-1}.

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12 hours ago
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