CHEMISTRY HIGH SCHOOL

A motorist travels a distance of 406km. during a 7 hour period. what was the average speed?

Answers

Answer 1
Answer:

Answer:

Average speed of the motorist is 58 km/hour.

Explanation:

Total distance covered by motorist = D = 406 km

Total time taken motorist = T = 7 Hours

The formula of an average speed is given by:

S_(avg)=\frac{\text{Total distance covered}}{\text{Total time taken}}=(D)/(T)

Average speed of the motorist is:

S_(avg)=(406 km)/(7 hours)=58 km/hour
Answer 2
Answer: If we are to say that the average speed per hour, then the answer is 58kph, in calculation to get the average, you just divide the total distance over the period of time. in equation, 406km/7hr the answer is 58 kilometers per hour.

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Arrange this letters plss1.tedsaturauntionsolu
2.ratedsatulutisoon

I will give u 15 points ​

Answers

Answer: 1 . Unsaturated Solution

2. Saturated  Solution

Explanation:

1 ..tedsaturauntionsolu----------- Unsaturated Solution

2. ratedsatulutisoon--------------Saturated  Solution

 An Unsaturated solution is defined as  a  solution which contains  an amount of solute  that dissolves completely since the amount of solute  is still  less than the maximum amount that can readily dissolve in such solution and an additional amount of solute if added continues to dissove in the solution. Here the solution is still less than the equilibrium point.

example include. Addition of salt or sugar in water and it dissoves completely.

A saturated  solution is defined as A solution  which contains a maximum amount of solute that an additional solute will no longer be capable of being dissolved further since its equilibrium point has been reached.

Example- The addition of sugar to water till it no longer dissolves

Carbonated water is a saturated solution saturated with carbon as can be seen in the air bubbles  it gives offf in form of carbon.

How many grams of KNO₃ should be used to prepare 2.00L of a .500 M solution ?

Answers

Volume = 2.00 L

Molarity = 0.500 M

M = n / V

0.500 = n / 2.00

n = 0.500 * 2.00

n = 1.0 mole KNO₃

Molar mass KNO₃ = 101.1032 g/mol

1 mole ------ 101.1032 g
1.0 mole ------ ?

mass = 1.0 * 101.1032 g / 1

mass = 101.1032 g of KNO₃

hope this helps!

What is the nuclear symbol for the isotope of bromine?

Answers

The isotopes of bromine are Bromine-79 and Bromine-81. Bromine-79 has 35 protons and 44 neutrons while bromine-81 has 35 protons and 46 neutrons. They are represented as Br-79 and Br-81.

Carbon can share a maximum of how many of its valence electrons when bonding to other atoms?2

4

6

Cannot be determined

Answers

Carbon can share a maximum of four of its valence electrons when bonding to other atoms. This is the reason why organic molecules can be so large because of this bonding. Suppose you have a compound of CCl4. You know that chlorine can only share 1 electron because 7 of its electrons are filled. Also, in carbon, it can only share 4 electrons because 4 of it are already filled. That is why carbon needs four chlorine to form CCl4.

The falling of rain, snow, hail, or ice pellets from the atmosphere is called watering

precipitation

perception

Answers

Precipitation is when water falls from the clouds in one form or another.
Watering isn't the right term.
Perception is seeing something.

Answer:

Precipitation

Explanation:

Where was Freon used prior to the ban on CFCs?

Answers

Answer:

The majority of automobiles manufactured prior to 1994

Explanation:

their A/C systems. Since that time, several non-CFC refrigerants such as hydrofluorocarbons (HFCs) have been developed; and many more are in the development process
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