The combination of two or more atoms, from the same or different elements, creates a(n)__________. a. element c. molecule b. atom d. mixture

Answers

Answer 1

Answer: The correct answer to complete the sentence is C. The combination of two or more atoms, from the same or different elements, creates a molecule. Compounds are a type of molecules made of atoms from different elements held together by chemical bonds.

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The molar heat of vaporization of water is 40.7kJ/mol. How much heat must be absorbed to convert 50.0 grams of liquid water at 100oC to steam at 100oC?A) 1.46 X 10 kJ
B) 1.13 X 102kJ
C) 2.04 X 103kJ
D) 3.66 X 104kJ

Answers

During a phase change the temperature does not change since all of the heat is being absorbed in order to break the intermolecular forces. Due to that, the formula will not need to have T in it and is actually q=nΔH(v).
n=the number of moles (in this case 2.778mol of water since you divide 50g by 18g/mol).
ΔH(v)=the molar heat of vaporization (in this case 40.7kJ/mol).
q=the heat that must be absorbed
q=2.778mol×40.7kJ/mol
q=113.1kJ
Therefore the water needs to absorb 1.13×10²kJ.

I hope this helps. Let me know if anything is unclear.

How are ocean waves and radio waves alike and how are they different from each other?

Answers

Ocean waves and radio waves are both forms of waves that transfer energy. They share the characteristics of wave-like behavior and energy transfer. However, they differ in several aspects.

Ocean waves require a physical medium (water) to propagate, while radio waves can travel through a vacuum or the atmosphere. Ocean waves have lower speeds compared to radio waves, which travel at the speed of light. They also have different frequency and wavelength ranges, with ocean waves having lower frequencies and longer wavelengths, while radio waves have higher frequencies and shorter wavelengths.

Ocean waves are generated by wind, seismic activity, or gravitational forces, while radio waves are generated by electronic devices. They are detected and utilized for different purposes, with ocean waves being measured for coastal engineering and oceanography, and radio waves being used for communication and radar systems.

The total pressure inside a 1.62 cylinder kept at 35°C is 1.15 atm. If the volume of the cylinder drops to 0.74 L and the temperature remains the same, what is the new pressure inside the cylinder?

Answers

By exponential outcome 21934

Uses a special type of paper to separate liquids based on their different densitiesa. filtration
b. distillation
c. crystallization
d. chromatography

Answers

chromatography hope it works!

The digestion process starts in the _____.esophagus
stomach
small intestine
mouth

Answers

Answer: mouth

Explanation:

The food digestion process in the human or animal body starts in the mouth. The mouth consists of teeth which helps in crushing and grinding of food. The mouth secretes saliva which provides lubrication to the food items. It helps in mixing process of the food so that it can be easily swallowed inside the gut and could enter into the digestive tract.

Your mouth is where the digestion process starts because when yo chew your food, nutrients is released into your body

the wind pushes a paper cup along the sand at a beach. the cup has a mass of 0.025kg and accelerates at a rate of 5m/s2 how much force is the wind exerting on the cup

Answers

Mass of the paper cup = 0.025 kg
Rate of acceleration of the cup due to force of wind = 5 m/s^2
We already know that
Force = Mass * Acceleration
So Force exerted by the wind on the cup = 0.025 * 5 kg m/s^2
= 0.125 Newton
So the force exerted by the wind on the paper cup is 0.125 newton.I hope this is the answer thatyou wanted and the process of doing such problems is clear to you.

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