Record the length of the object shown.

PLEASE HELP ASAP ONE MORE QUESTION !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

MAXImum [283]

A. The United States can produce enough food to feed all the people in the world. is your best answer, and is the only logical answer.

It is the only answer that actually has the word "food" in it, and is a direct result of farming technological advances.

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3 0

3 years ago

In multicellular organismscells that become specialized to perform a specific function are called?

Zolol [24]

The cell proliferates to produce many cells that result in multicellar organism.

answer

8 0

3 years ago

Automotive antifreeze consists of ethylene glycol, CH2(OH)CH2(OH), a nonvolatile nonelectrolyte. Calculate the boiling point and

spayn [35]

Answer:

Freezing point of solution = - 10.3°C

Boiling point of solution = 102.8°C

Explanation:

This is about colligative properties:

Freezing point depression → ΔT = Kf . m

ΔT = Freezing point of pure solvent - Freezing point of solution

Boiling point elevation → ΔT = Kb . m

ΔT = Boiling point of solution - Boiling point of pure solvent

Let's determine m which means molality (moles of solute in 1 kg of solvent)

Solute: Ethylene glycol → Mass = 25 g

Moles = Mass / Molar mass → 25 g / 60g/mol = 0.416 moles

Solvent: Water

25 % means, 25 g of solute in 100 g of solution

Therefore, the mass of water is 75 g (100 -25) . (Solution = Solute + Solvent)

We convert the mass from g to kg → 75 g . 1kg /1000g = 0.075 kg

Molality (mol/kg) = 0.416 m / 0.075kg = 5.55 m

We replace data in the formulas:

Freezing point depression:0° - Freezing point of solution= 1.86°C/m. 5.55 m

Freezing point of solution = - (1.86°C/m . 5.55m) = - 10.3°C

Boiling point elevation:Boiling point of solution - 100°C = 0.51°C /m . 5.55 m

Boiling point of solution = 0.51°C /m . 5.55 m + 100°C = 102.8°C

3 0

3 years ago

A phospholipid molecule has a polar and a nonpolar end. Because of this, water molecules form-polar bonds with the nonpolar end

Lady bird [3.3K]

The right answer is Hydrogen bonds with the polar end of the phospholipid molecule.

A phospholipid contains a phosphoric acid group as mono or di-ester.

The physicochemical properties of phospholipids depend both on the polar molecule of the hydrophilic head and on the aliphatic chains of the hydrophobic tails. In an aqueous medium, such amphiphilic molecules tend to be organized so that only their hydrophilic head is in contact with the water molecules, which typically results in structures in micelle, liposome or lipid bilayer.

7 0

3 years ago

TRUE OR FALSE QUESTIONS

s344n2d4d5 [400]

1: FALSE The physical properties of metals include shininess, malleability, ductility, and conductivity.

2: FALSE Neutrons are the particles in an atom that have a neutral charge. They aren't positive like protons. They aren't negative like electrons.

3: TRUE Dmitri Ivanovich Mendeleev was a Russian chemist and inventor. He is best remembered for formulating the Periodic Law and creating a farsighted version of the periodic table of elements. He is also known as the "father of the periodic table"

6 0

3 years ago

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