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Citrus2011 [14]
4 years ago
15

Pls answer

Chemistry
1 answer:
Ne4ueva [31]4 years ago
4 0

the distance driven by the car and the time it took to complete the race

Explanation:

To determine the average speed of the winning car in the race, the distance driven by the car and the time it took to complete the race. The average speed is the rate of change of the distance covered by a moving body with time.

  • it is usually given in m/s or km/hr

     Average speed =   \frac{distance covered by a moving body}{time}

 The distance and time will give sufficient information needed to evaluate the average speed.

Learn more:

Average speed of car  brainly.com/question/568302

Speed brainly.com/question/8893949

#learnwithBrainly

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When a solute is added to a solution why does it remain homogeneous?
Olenka [21]
<h3>Answer:</h3>

                 When a solute is added to a solution, it remains homogeneous because the solute is soluble in given solvent.

<h3>Explanation:</h3>

                         Homogeneous mixtures, also called true solutions are those mixtures in which the components proportions are same throughout in any given sample. For example, the mixture of table salt (NaCl) and water. When the solution is unsaturated and further NaCl is added to it, it will dissolve the NaCl because the saturation point is still not reached. Remember, as "<em>Like Dissolves Like</em>" NaCl being polar in nature will interact with water molecules and will dissociate into Na⁺ and Cl⁻ ions surrounded by δ- O and δ+ H atoms of water molecules.

<h3>Conclusion:</h3>

                  In order to form a Homogeneous mixture the solution must be unsaturated, solvent must have affinity for incoming solute particles and the size of solute should be equal to 1 Â (Angstrom).

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4 years ago
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Tobacco's main ingredient is nicotine,alcohol,tar,cigarettes?
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The correct answer is nicotine. It is the main ingredient in a tobacco. Nicotine is an addictive substance thus overuse of the substance will lead to addiction. It acts as a stimulant and a depressant. Tobacco can be dried for smoking and can also be consumed directly.
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PLEASE HELP !<br><br> Convert 0.429 mol AlCl3 to grams
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3 years ago
If 30.0 g absorbs 255 J of heat, how much does the temperature of the water change? Would the temperature be increasing or decre
Nutka1998 [239]
<h3>Answer:</h3>

Change in temperature = 2.03°C, the temperature is increasing

<h3>Explanation:</h3>
  • To calculate the quantity of heat absorbed or released by a substance we multiply mass of the substance by it's specific heat capacity and the temperature change.
  • Therefore, Quantity of heat, Q = mass × specific heat × change in temperature

In this case;

Mass of water = 30.0 g

Quantity of heat absorbed = 255 J

Specific heat capacity of water = 4.186 J/g°C

Rearranging the formula, Δt = Q ÷ mc

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The temperature change is 2.03°C, the temperature is therefore increasing.

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The atomic mass of an antom equals the sum of the masses of the ____
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