CHEMISTRY MIDDLE SCHOOL

Consider the following reaction.CO2(g) + Hz(9) —CO(g) + H2O(1)
What is being oxidized?
carbon
carbon dioxide
oxygen
hydrogen
o

Answers

Answer 1
Answer:

Answer:

Hydrogen

Explanation:

Oxidation and reduction are two types of chemical reactions known as redox reactions. (Red - reduction; ox - oxidation).

A substance is oxidized when it receives an oxygen atom from an oxidizing agent. The substance that receives oxygen is known as a reducing agent.

A substance  is reduced when it donates an oxygen atom to another atom. Thus, the substance is known as an oxidizing agent - it supplies oxygen.

In the reaction:

CO2(g) + Hz(9) —CO(g) + H2O(1)

CO₂ loses oxygen to become CO and H₂ gains oxygen to become H₂O. Thus, CO₂ is an oxidizing agent and H₂ is a reducing agent.
Answer 2
Answer: Your hydrogen is being oxidized and your carbon dioxide is being reduced.

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How do light technologies typically produce color images?A) by manipulating the angles at which light enters a lens
B) by energizing light waves with electric currents
C) by combining light of different frequencies
D) by concentrating light into a very small range of wavelength

Answers

How do light technologies typically produce color images? Light technologies typically produce color images by manipulating the angles at which light enters a lens. The answer is letter A.

Answer:

C) By combining light of different frequencies. Hope this helps!

25.00 ml of heavy water at 20 degrees celcius was pipetted into a 37.234 g beaker. The final mass of the beaker was 64.859 g. What was the density of the water at 20 degrees celcius?

Answers

density is mass over volume

find the mass of the water and then divide it by the volume (25)

Final answer:

The density of heavy water at 20 degrees Celsius can be calculated as the mass of the water divided by its volume, which in this case is 1.105 g/ml.

Explanation:

To determine the density of the heavywater, we need to consider the mass of the water and the volume it occupies. The mass of the water can be calculated by subtracting the mass of the beaker from the final mass. That is 64.859 g (final mass) - 37.234 g (beaker mass) = 27.625 g (mass of water). The volume of the water is given as 25.00 ml. Since the density of a substance is defined as its mass per unit volume, we can calculate the density as mass / volume = 27.625 g / 25.00 ml = 1.105 g/ml. Therefore, the density of the heavy water at 20 degrees Celsius is 1.105 g/ml.

Learn more about Density here:

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EADY QUESTION WORTH 50PTS

Answers

By adding both the potential energy and the kinetic energy. You can also use the formulas 1/2mv^2 and mgh to find the kinetic and potential energy.
by adding the objects kinetic and energy potential energy.

Under what conditions does the "NET FORCE" acting an object equal the sum of the individual forces?Net Force- Acting on an Object
Is my definition right?

Answers

Answer : When the forces are acting in the same direction of movement of the object it can be said as sum of the two individual forces will be equal to the "NET FORCE" .


Example : If two forces (2 kids pushing in the same direction to move the object big box) act on an object(big box) in the same direction, then the net force is equal to the sum of the two forces.

The net force on an object is equal to the sum of the individual forces
when the individual forces all act in the same direction.

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suppose a variation makes an individual member of a species better adapted to its environment.how might the variation affect the individual's reproduction.

Answers

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Isotopes of the same element have different numbers of ________. protons
neutrons
neutrons and electrons
protons and electrons

Answers

Answer : The correct option is, neutrons

Explanation :

Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Number of protons

For example : Carbon - 13 isotope has mass number = 13, atomic number = 6 and the number of neutrons = 13 - 6 = 7

Hence, the isotopes of the same element have different numbers of neutrons.
The answer is neutrons
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