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3 years ago

Which of the following is not a factor that affects thermal energy of a substance?

1 answer:

7 0

The answer is : B. age of material

thermal Energy is an energy that come from heat, which caused by the movement of the particles in that substance. The faster it moves, the more energy it produced, which is affected by the change of temperature, its composition, and its size

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Describe how glacial erosion influenced the topography of Ohio.

Marianna [84]

During the past two million years, glaciers have shaped and reshaped the surface of Ohio several times. These continental masses of ice affected as much as two-thirds of the state. Moving from the north and northwest, glaciers have scraped and flattened the landscape. Often more than a mile thick, they smoothed existing hills and filled valleys with enormous amounts of rocks, gravel, and smaller particles. Through these actions, glaciers have had a very important impact on the agriculture of Ohio. Their activity has been felt in two noticeable ways: shaping the ground upon which people work and build, and forming the soils that cover that ground.

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3 years ago

In which cell organelle does protein synthesis occur? cytoplasm mitochondria ribosome cell membrane

MariettaO [177]

It occurs in The ribosome

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3 years ago

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Write the orbital notation and electron configuration for the following elements. (Worksheet #2)

Mademuasel [1]

Answer:

the answer is B

Explanation:

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3 years ago

Read 2 more answers

Aluminum sulfate, known as cake alum, has a wide range of uses, from dyeing leather and cloth to purifying sewage. In aqueous so

NISA [10]

Answer:

a) The chemical reaction is given as:

$6NaOH(aq)+Al_2(SO_4)_3\rightarrow 2Al(OH)_3(s)+3Na_2SO_4(aq)$

2.571 grams of aluminum hydroxide is precipitated.

Explanation:

a) The chemical reaction is given as:

$6NaOH(aq)+Al_2(SO_4)_3\rightarrow 2Al(OH)_3(s)+3Na_2SO_4(aq)$

Moles of NaOH = n

Volume of the NaOH = 185.5 mL = 0.1855 L( 1 mL =0.001 L)

Molarity of the solution = 0.533 M

$n=0.533 M\times 0.1855 mL=0.09887 mol$

Moles of aluminum = n

15.8 g of aluminum sulfate per liter.

Volume of solution = 627 mL = 0.627 L (1 mL= 0.001 L)

Mass of aluminium sulfate in solution = 15.8 g/L × 0.627 L =9.9066 g

Moles of aluminum sulfate = $\frac{9.9066 g}{342 g/mol}=0.02897 mol$

Moles of NaOH = 0.09887 mol

According to reaction, 6 moles of NaOH reacts with 1 mole of aluminum sulfate, then 0.09887 moles of NaOH will recat with :

$\frac{1}{6}\times 0.09887 mol=0.01648 mol$

This means that sodium hydroxide moles are in limiting amount.So, amount of aluminum hydroxide will depend upon moles of sodium hydroxide.

According to reaction, 6 moles of sodium hydroxide gives 2 moles of aluminium hydroxide, then 0.09887 moles of sodium hydroxide will give :

$\frac{2}{6}\times 0.09887 mol=0.03296 mol$ of aluminum hydroxide

Mass of 0.03296 moles of aluminum hydroxide:

0.03296 mol × 78 g/mol = 2.571 g

2.571 grams of aluminum hydroxide is precipitated.

8 0

3 years ago

benzoic acid and phenol are both solids that are insoluble in water. a mixture of the two compounds can be separated by adding a

Arturiano [62]

The mixture of phenol and benzoic acid is separated by adding $NaHCO_{3}$ to produce brisk effervescence with sodium benzoate .

When benzoic acid react with $NaHCO_{3}$ then sodium benzoate is produced which is soluble in water and separated from non aqueous solvent . Organic compounds are soluble in organic solvent and inorganic compound mainly soluble in inorganic solvent like water.

What is brisk effervescence?

Brisk effervescence is when continuous gas evolution occurs in a chemical reaction like CO2. When HCl is added in $NaHCO_{3}$ then CO2 evolved.