The combustion of fossil fuels releases ____ into the atmosphere. oxygen

gasoline

carbon

glucose

Answers

Answer 1

Answer:

Answer: The correct answer is carbon.

Explanation:

Combustion reaction is defined as the reaction in which a hydrocarbon burns in oxygen or reacts with oxygen gas to produce carbon dioxide and water molecule.

Fossil fuels are defined as the hydrocarbons which mainly contains coal, fuel oil, natural gas etc..

When fossil fuels are burned in air, it mainly releases carbon dioxide, sulfur dioxide, methane, nitrous oxide etc..

The major component released during the combustion of fossil fuels is carbon.

Hence, the correct answer is carbon.

Answer 2

Answer: CARBON because fossil fuells

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Which of the questions would involve the investigation of kinetic energy?A. What material makes the strongest boat?

B. How does the color of a boat affect heat absorption?

C. Do boats float higher in salt or fresh water?

D. What is the effect of a boat’s shape on its speed?

Answers

Answer:

D. What is the effect of a boat’s shape on its speed?

Explanation:

Kinetic energy can be defined as the energy possessed by an object or body due to its motion. It is the amount of work required to accelerate an object or body with a specific mass from its point of initial rest to a final velocity.

Mathematically, kinetic energy (K.E) is equal to 1/2(mv²).

Hence, the question which would involve the investigation of kinetic energy is "what is the effect of a boat’s shape on its speed?" because speed is directly related to the motion of the boat. Generally, the shape of the hull of a boat has an effect on the speed of the boat.

Answer:

What is the effect of a boat’s shape on its speed?

Which of these most likely causes a total solar eclipse?Select one:
a. the sun, moon at perigee, and Earth forming a triangle
b. the sun, moon at apogee, and Earth forming a triangle
c. the new moon at apogee coming between Earth and the sun along a straight line
d. the new moon at perigee coming between Earth and the sun along a straight line

Answers

Answer:

d. the new moon at perigee coming between Earth and the sun along a straight line

Explanation:

Solar eclipse occurs when moon comes in between sun and Earth and the three align in a straight line. The moon blocks the sunlight falling on the earth. The earth passes through the shadow of the moon.This phase of moon is New moon.

A total eclipse is said to occur when the disc of moon complete covers the disc of sun. This happens when moon is at closest position to earth in it orbit that is at perigee.

A chemical with a bitter taste is most likely a(n) _____ a. salt.
b. solvent.
c. acid.
d. base.

Answers

(D)Base has a bitter taste

How many moles are represented by 250g of platinum?

Answers

You take the atomic mass of Pt and that equals how many grams are in a Mole. Divide that number by 250 and that will be the amount of Moles you have

Liquids and solids are left out of the equilibrium constant expression because their concentrations remain constant during reactions. What is the molarity concentration of liquid water at 25.0 LaTeX: ^\circ ∘C given that its density is 0.997 g/mL at that temperature? a.23.5 M
b.0.997 M
c.0.180 M
d.0.156 M
e.55.3 M

Answers

Answer:

55.3 M

Explanation:

Given temperature = 25°C

Density = 0.997 g/mL

Based on density the mass of water per L = 997 grams

The molar mass of water = 18

The moles of water = $(mass)/(molarmass)=(997)/(18)=55.3$

The molarity is defined as the moles of water per litre.

The moles = 55.3

Volume = 1 L

So molarity = 55.3 /1 = 55.3 M

What is true of valence electrons?a) They exist in the outer orbital.

b) they easily move from one orbital to another

c) they have difficulty moving from one orbital to another

d) they are always the lowest energy electrons of the atom