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3 years ago

The graph shows the solubility of several different salts in water, across a range of temperatures. According to the

Chemistry

2 answers:

DiKsa [7]3 years ago

5 0

Answer:

D. Potassium Nitrate

Explanation:

If you're using usa test prep.

sladkih [1.3K]3 years ago

4 0

Answer:

Sodium chloride

See the graph attached

Explanation:

The attached graph with a green and a red arrow facilitates the understanding of this explanation.

To read the solubility on the graph, you can start with the temperature, on the x-axis.

The red vertical arrow shows how, departing from the 40ºC temperature on the x-axis, you intersect the solutibility curve of sodium chloride at a height (y-axis) corresponding to 60 g/100cm³ of water (follow the green horizontal arrow).

Hence, sodium chloride is the salt that can dissolve at a concentration of about 60g/100cm³ of water at 40ºC.

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Consider a different analyte for this exercise. Citric acid is found in many fruits and fruit juices. Sodium hydroxide (NaOH) is

Tpy6a [65]

Answer:

(a) 1:3

(b)

mmol of OH⁻ = 1.893 mmol

mmol of H₃C₆H₅O₇: 0.6310 mmol

mass of H₃C₆H₅O₇: 0.1212 g

mass % of H₃C₆H₅O₇ in orange juice: 1.37%

molarity of H₃C₆H₅O₇ in orange juice: 0.0726 M

Explanation:

Let's consider the following balanced chemical equation.

H₃C₆H₅O₇ + 3 OH⁻ → C₆H₅O₇³⁻ + 3 H₂O

(a) What is the stoichiometry of H₃C₆H₅O₇ to OH⁻?

The molar ratio of H₃C₆H₅O₇ to OH⁻ is 1:3

(b)

mmol of OH⁻: ?

$24.61mL.\frac{0.0769mol}{L} =1.893mmol$

mmol of H₃C₆H₅O₇: ?

$1.893mmolOH^{-} .\frac{1molH_{3}C_{6}H_{5}O_{7}}{3molOH^{-} } =0.6310mmolH_{3}C_{6}H_{5}O_{7}$

mass of H₃C₆H₅O₇: ?

The molar mass of the citric acid is 192.1 g/mol.

$0.6310 \times 10^{-3} molH_{3}C_{6}H_{5}O_{7}.\frac{192.1gH_{3}C_{6}H_{5}O_{7}}{1molH_{3}C_{6}H_{5}O_{7}} =0.1212gH_{3}C_{6}H_{5}O_{7}$

mass % of H₃C₆H₅O₇ in orange juice: ?

$\frac{0.1212g}{8.83g} \times 100\%=1.37\%$

molarity of H₃C₆H₅O₇ in orange juice: ?

$M=\frac{0.6310 \times 10^{-3} molH_{3}C_{6}H_{5}O_{7}}{8.69 \times 10^{-3} L} =0.0726M$

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3 years ago

I NEED HELP PLEASE ASAP!! :) How many molecules are represented by 3CO2?

andriy [413]

9. 3 Carbon and 6 Oxygen

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A solid is placed in a solution. Which observation most likely indicates that a chemical reaction has occurred?

Ierofanga [76]

A change in color, odor, or texture

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What is observed when a solution of potassium iodide is added to silver nitrate solution ? a) No reaction takes place (b) White

Oksi-84 [34.3K]

Answer:

c) yellow precipitate of Agl is formed

Explanation:

KI + AgNO3 = AgI (s)+ KNO3

c) yellow precipitate of Agl is formed

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3 years ago

Under which conditions of temperature and pressure does a real gas behave most like an ideal gas

castortr0y [4]

Answer:

Generally, a gas behaves more like an ideal gas at higher temperature and lower pressure, as the potential energy due to intermolecular forces becomes less significant compared with the particles' kinetic energy, and the size of the molecules becomes less significant compared to the empty space between them.

Explanation:

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