Zebra mussels have no???

Answers

Answer 1

Answer: good question ask your parents :3 hope this helps

Related Questions

Why is a mass movement of mud called a flow?
Iron is produced in a blast furnace.Explain why most of the iron produced in a blast furnace is converted into steels.
What is the conversion of 85.0kg
Which of the following processes are physical changes?a) drying wet clothesb) lighting a match from a matchbookc) cutting snowflakes out of paperd) melting butter for popcorn
Arc AB is One-sixth of the circumference of a circle. What is the radian measure of the central angle?A.)StartFraction pi over 6 EndFractionB.)StartFraction pi Over 3 EndFractionC.)StartFraction 2 pi Over 3 EndFractionD.)StartFraction 5 pi Over 6 EndFractionTHE ANSWER IS B!!!

The Minoan civilization existed on the island of Crete, and it was influential in the Mediterranean during the 2000s BCE. In which way can the Phoenicians be described as successors to the Minoans?A.

Phoenicia had a powerful, well-trained army.

B.

Phoenicia was known for its science and culture.

C.

Phoenicia led an alliance of many city-states.

D.

Phoenicia was a major sea trading power

Answers

The Phoenicians be described as successors to the Minoans as Phoenicia was a major sea trading power. Hence option D is correct.

What is Phoenicians ?

Phoenicians are defined as an ancient thalassocratic culture with its center in present-day Lebanon, which originated in the Levant region of the eastern Mediterranean. Throughout their history, the Phoenician city-states' borders expanded and contracted, and they controlled various enclaves, including Arwad and Tell Sukas. The Phoenician and Punic religion was a polytheistic system with regional variations and some shared characteristics.

The Phoenicians and the Minoans were both well-known marine traders who concurrently ruled the seas without any signs of warfare.Both cultures blended the functions of their commerce hub, royal palace, and administrative hub.

Thus, the Phoenicians be described as successors to the Minoans as Phoenicia was a major sea trading power. Hence option D is correct.

To learn more about Phoenicians, refer to the link below:

brainly.com/question/1753095

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Answer: Phoenicia was a major sea trading power

Explanation:

Why does water with salt in it freeze much more slower than water without it ? Explain

Answers

When you add salt to water, you lower to freezing point of the substance.

So for example, normal water freezes at 0°C. But water with salt in it won't freeze at 0°C, because its freezing point is lowered.

In answer to the question. It takes longer for water with salt in it to freeze because the substance requires a lower temperature than normal water to freeze.

The more salt in the water, the lower the freezing point will be. When freshwaterfreezes, water molecules of hydrogen and oxygen have bonded together into a crystalline structure of ice. The presence of salt makes it harder for water molecules to bond to the ice structure, because ice naturally repels salt molecules.

Which element is classified as an alkali metal?

Answers

Answer:

Explanation:

Alkali metals are in group 1 (the first column on the periodic table) including Li, Na, K, etc.

A 40.8 mol sample of methane gas, CH4(g), is placed in a1020 L container at 298 K.
What is the pressure, in atm, of the methane gas?
Express the answer using 3 significant figures.
atm

Answers

Answer:

P = 0.979 atm

Explanation:

Given data:

Number of moles of methane = 40.8 mol

Volume of container = 1020 L

Temperature = 298 K

Pressure of gas =?

Solution:

According to ideal gas equation,

PV = nRT

P = pressure

V = volume

n = number of moles

R = general gas constant

T = temperature

Now we will put the values,

P = nRT/V

P = 40.8 mol × 0.0821 atm.L/mol.K × 298 K / 1020 L

P = 998.2 atm /1020

P = 0.979 atm

GIVE ONE ADVANTAGE AND ONE DISADVANTAGE OF RECYCLING THE MATERIALS FROM THIS TYPE OF BALLPOINT PEN

Answers

The advantage is that you will be able to re-use that ballpoint pen in another manner. It could be a toy and such. The only disadvantage that it is really hard to transform the parts of the ball pen especially it has ink and the like. You can't recycle the ink for another purpose.

Calculate the heat required for the following two processes, and compare the results.a. A 100.0 g sample of solid ethanol melts at its melting point. Hfus = 4.94 kJ/mol

b. A 100.0 g sample of liquid ethanol vaporizes at its boiling point. Hvap = 38.6 kJ/mol

Answers

The heat required for the following two processes are:

a. 10.74 KJ

b. 83.92 KJ

Part a)

Given:

Mass (m) of ethanol = 100g

Heat of fusion, Hfus = 4.94 kJ/mol

To find:

Heat (Q) =?

Calculation for number of moles:

Mass of C₂H₅OH = 100g

Molar mass of C₂H₅OH = (2x12)+ (5x1) + 16 + 1 = 46g/mol

Number of Mole = Mass /Molar Mass

Number of mole (n) of C₂H₅OH = 100/46 = 2.174 moles.

Calculation for Heat of fusion:

Q = n x Hfus

Q = 2.174 mol x 4.94 kJ/mol

Q = 10.74KJ

Therefore, 10.74 KJ of heat is required to melt the ethanol.

Part b)

Given:

Mass of C₂H₅OH = 100g

Heat of vaporization, Hvap = 38.6 kJ/mol

To find:

Heat (Q) =?

Calculation for Heat of vaporization:

As calculated above, the number of mole in 100g of ethanol, C₂H₅OH is 2.174 moles.

The heat required to vaporize the ethanol can be obtained as follow:

Q = n x Hvap

Q = 2.174 mol x 38.6 kJ/mol

Q = 83.92 KJ

Therefore, 83.92 KJ of heat is required to vaporize the ethanol.

Find more information about Heat of fusion here:

brainly.com/question/87248

Answer:

A. 10.74 KJ

B. 83.92 KJ

Explanation:

A. Data obtained from the question include the following:

Mass (m) of ethanol = 100g

Heat of fusion, Hfus = 4.94 kJ/mol

Heat (Q) =..?

Next, we shall determine the number of mole in 100g of ethanol, C2H5OH. This is illustrated below:

Mass of C2H5OH = 100g

Molar mass of C2H5OH = (2x12)+ (5x1) + 16 + 1 = 46g/mol

Number of mole (n) of C2H5OH =..?

Mole = Mass /Molar Mass

Number of mole (n) of C2H5OH = 100/46 = 2.174 moles.

Now, we can obtain the heat required to melt the ethanol as follow:

Q = n x Hfus

Q = 2.174 mol x 4.94 kJ/mol

Q = 10.74KJ

Therefore, 10.74 KJ of heat is required to melt the ethanol.

B. Data obtained from the question include the following:

Mass of C2H5OH = 100g

Heat of vaporisation, Hvap = 38.6 kJ/mol

Heat (Q) =..?

As calculated above, the number of mole in 100g of ethanol, C2H5OH is 2.174 moles.

The heat required to vaporise the ethanol can be obtained as follow:

Q = n x Hvap

Q = 2.174 mol x 38.6 kJ/mol

Q = 83.92 KJ

Therefore, 83.92 KJ of heat is required to vaporise the ethanol.

C. From the above calculations, a higher amount of heat energy i.e 83.92 KJ is required to vaporise the ethanol and a lesser amount of heat energy i.e 10.74 KJ is needed to melt the ethanol.

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1.The ___________ energy in a mechanical system is determined by adding the potential and kinetic energy together.total massive 2.The initial ___________ energy is equal to zero because the starting point is set at zero height to make things easier.kinetic potential 3.In the example, the final kinetic energy is determined to be ___________ because at the peak height, the ball instantaneously stops.positive zero negative 4.In this system, potential and kinetic energy are ________________ proportional.inversely directly

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If a base is added to water, what will occur?hydronium ion concentration is increased.hydroxide ion concentration is decreased.[H+] is decreased.[OH-] is decreased.