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3 years ago

A glucose solution has a density of 1.02g/mL. what is the specific gravity?

Chemistry

1 answer:

Bond [772]3 years ago

4 0

Answer:- Specific gravity of glucose solution is 1.02.

Solution:- Specific gravity is the ratio of the compound density with water density, means how denser the compound solution is as compared to water.

specific gravity = $\frac{glucose density}{water density}$

density of glucose is given as 1.02 g per mL and water density is 1.00 g per mL.

Let's plug in the values in the formula:

specific gravity = $\frac{1.02}{1.00}$ = 1.02

So, the specific gravity of glucose is 1.02. It indicates that glucose is 1.02 times more denser than water.

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The equilibrium constant, K, for the following reaction is 2.44×10-2 at 518 K: PCl5(g) PCl3(g) + Cl2(g) An equilibrium mixture o

Volgvan

Answer:

[PCl₅] = 0.5646M

[PCl₃] = 0.1174M

[Cl₂] = 0.1174M

Explanation:

In the reaction:

PCl₅(g) ⇄ PCl₃(g) + Cl₂(g)

K equilibrium is defined as:

The initial moles of each compound when volume is 15.3L are:

PCl₅ = 0.300mol/L×15.3L = 4.59mol

Cl₂ = 8.55x10⁻²mol/L×15.3L = 1.308mol

PCl₃ = 8.55x10⁻²mol/L×15.3L = 1.308mol

At 8.64L, the new concentrations are:

[PCl₅] = 4.59mol / 8.64L = 0.531M

[PCl₃] = 1.308mol / 8.64L = 0.151M

[Cl₂] = 1.308mol / 8.64L = 0.151M

At these conditions, reaction quotient, Q, is:

Q = [0.151M] [0.151M] / [0.531M]

Q = 4.29x10⁻²

As Q > K, <em>the reaction will shift to the left producing more reactant, </em>that means equilibrium concentrations are:

[PCl₅] = 0.531M + X

[PCl₃] = 0.151M - X

[Cl₂] = 0.151M - X

<em>Where X is reaction coordinate.</em>

Replacing in K expression:

2.44x10⁻² = [0.151M - X] [0.151M - X] / [0.531M + X]

1.296x10⁻² + 2.44x10⁻²X = 0.0228 - 0.302X + X²

Solving for X:

X = 0.293 → False solution. Produce negative concentrations

<em>X = 0.0336M → Right solution.</em>

Replacing:

[PCl₅] = 0.531M + 0.0336

[PCl₃] = 0.151M - 0.0336

[Cl₂] = 0.151M - 0.0336

4 0

4 years ago

Assume that a raindrop has a volume of 3.48 cm3. If you had an Avogadro’s number of raindrops that just filled a cubic box. What

N76 [4]

Answer is: <span>edge of the length of the box measured is 1280,57 kilometers.
</span>V(raindrop) = 3,48 cm³.
V(cubic box) = 3,48 cm³ · 6,023·10²³.
V(cubic box) = 2,1·10²⁴ cm³.
V(cubic box) = 2,1·10²⁴ cm³ ÷ 10¹⁵.
V(cubic box) = 2,1·10⁹ km³.
r(cubic box) = ∛2,1·10⁹ km³.
r(cubic box) = 1280,57 km.

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3 years ago

Which of the following is a possible value for a ph?

Lapatulllka [165]

Answer: [B]: 12.0 .
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Note: The pH scale ranges from 1 to 14 .
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4 years ago

Read 2 more answers

Sulfur dioxide So2 is present in our atmosphere and is used as a preservative in foods. Is it possible to use the common charges

telo118 [61]

Answer:

Your question is not interpreted very well, but as regards what is observed, SO2 is not the formula for sulfur oxide, the formula for sulfur oxide is SO since the valence used in sulfur would be +2 and oxygen -2 therefore the sum of these valences would be equal to zero, therefore it would be the correct thing considering the true equation as SO

Explanation:

There are also sulfur dioxide, or sulfur trioxide, which is usually used in the formation of tertiary salts such as copper sulfate.

sulfur trioxide and sulfur dioxide are synonymous with sulfate or sulphite

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3 years ago

THIS IS SCIENCE What the metric base unit for length.

kozerog [31]

Length: The most common units that we use to measure length in the metric system are the millimeter, centimeter, meter, and kilometer. The millimeter is the smallest commonly used unit in the metric system

Mass: Kilogram.

Liquid volume: The basis of fluid volume units for the metric system is the liter. A liter is about the same as one quart.

The independent variable in an experiment is the variable whose value the scientist systematically changes in order to see what effect the changes have.

A dependent variable is what the experimenter observes to find the effect of systematically varying the independent variable.

Experimental constants are values that do not change either during or between experiments.

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(And psa. don't lie to people about the points earned!)

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3 years ago