A car travels with a speed of 91.4 kilometers per hour (km/hr). Convert this speed to meters per second (m/s). Show your work.

Round your final answer to three significant figures.

Type your answer...

Answers

Answer 1
Answer:

Answer:

25.3889 m/s

Explanation:

We can simply write 91.4km/hr as,

91.4km

1 hr

=91400m

60 s × 60 s

=91400m

3600 s

= 25.3889 m/s


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How many molecules are in 2.50 moles of co2

Answers

Explanation:

There are 1.51 x 1024 molecules of carbon dioxide in 2.50 moles of carbon dioxide.

Explain what the police siren sounds like to Jane. Explain what the police siren sounds like to John. Explain why the police siren sounds different between Jane and John.

Answers

Like siren They all sound the same
its moving toward jane and away from john. it sounds different because of the wave sound

What is the difference between a volume that is delivered and a volume that is contained?

Answers

Answer:

When the graduation line denotes the volume contained in the calibrated vessel, the ware is marked “TC”. When the graduation line indicates the volume delivered from the vessel, the ware is marked “TD”.

Which factor is likely to impact the possible number of compounds?

Answers

Answer:

The correct answer is the tendency of all the elements to react with every other element.  

Explanation:

A component in which two or more elements are bonded chemically leads to the production of a compound. A compound refers to a pure component as it comprises elements that are in their pure state. The formation of a compound takes place when the elements react with each other based upon their reactivity.  

For example, the element chlorine is deficient of one electron and the element sodium exhibits one additional electron. Thus, chlorine easily reacts with the sodium in order to obtain stability. Therefore, the formation of sodium chloride takes place. Hence, it can be concluded that the tendency of all the elements to react with every other element is the condition, which is possible to influence the probable number of compounds.

the impact of possible number of compounds is the ability of all elements to react with every other atoms

Write the name of the ionic compound Fe(NO2)2Answer
iron (III) nitrite
iron (II) nitrite
iron (1) nitrite

Answers

Final answer:

The name of the ionic compound Fe(NO2)2 is iron (II) nitrite.


Explanation:

The name of the ionic compound Fe(NO2)2 is iron (II) nitrite.


Learn more about Naming ionic compounds here:

brainly.com/question/30264547


When 282 gr of glycine are dissolved in 950 gr of a certain mystery liquid, the freezing point of the solution is 8.2 C less than the freezing point of pure. Calculate the mass of iron(III) chloride that must be dissolved in the same mass of to produce the same depression in freezing point. The van't Hoff factor for iron(III) chloride in X. Be sure your answer has a unit symbol, if necessary, and round your answer to significant digits.

Answers

Answer: 1.4* 10^2g

Explanation:

Depression in freezing point is given by:

\Delta T_f=i* K_f* m

\Delta T_f=T_f^0-T_f=8.2^0C = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte like glycine)

K_f = freezing point constant = ?

m= molality

\Delta T_f=i* K_f* \frac{\text{mass of solute}}{\text{molar mass of solute}* \text{weight of solvent in kg}}

Weight of solvent = 950 g = 0.95 kg

Molar mass of glycine = 75.07 g/mol

Mass of glycine added = 282 g

8.2=1* K_f* (282g)/(75.07 g/mol* 0.95kg)

K_f=2.2^0C/m

Thus freezing point constant is 2.2^0C/m

2) \Delta T_f=i* K_f* m

\Delta T_f=T_f^0-T_f=8.2^0C = Depression in freezing point

i= vant hoff factor = 4 (for FeCl_3)

K_f = freezing point constant = 2.2C/m

m= molality  

\Delta T_f=i* K_f* \frac{\text{mass of solute}}{\text{molar mass of solute}* \text{weight of solvent in kg}}

Weight of solvent = 950 g = 0.95 kg

Molar mass of FeCl_3 = 162.2 g/mol

Mass of  FeCl_3 added = ?

8.2=4* 2.2* (xg)/(162.2 g/mol* 0.95kg)

x=1.4* 10^2g

Thus mass of iron(III) chloride that must be dissolved in the same mass of to produce the same depression in freezing point is 1.4* 10^2g

Answer:

mass_(FeCl_3)=1.5x10^2gFeCl_3

Explanation:

Hello,

In this case, by using the given data for glycine, one computes the freezing point constant of the mystery liquid as shown below, considering the molality of the glycine and its van't Hoff factor equal to the unity:

\Delta T=i*Kf*m_(Glyc)\n\nKf=(\Delta T)/(i*m_(glyc)) =(8.2^oC)/(1*(282gGlyc)/(950gX)*(1molGlyc)/(75.07gGlyc)*(1000gX)/(1kgX) ) \n\nKf=2.1^oC/m

Now, as we are looking for the mass of iron(III) chloride at the same conditions of the aforesaid case, at first, one solves for the molarity of such compound considering that its theoretical van't Hoff factor is 4 as follows:

m_(FeCl_3)=(\Delta T)/(i*Kf) =(8.2^oC)/(4*2.1^oC/m_(FeCl_3)) =0.98m

Now, one obtains the requested mass via:

mass_(FeCl_3)=0.98(molFeCl_3)/(kgX)*0.95kgX*(162.35gFeCl_3)/(1molFeCl_3)  \n\nmass_(FeCl_3)=151.1gFeCl_3\nmass_(FeCl_3)=1.5x10^2gFeCl_3

Best regards.