If the speedometer in a car reads 78 miles per hour, the car's speed in kilometers per hour is 125.53 kilometers per hour.
<h3>How to convert speed?</h3>
The speed of a car is the measure of the distance moved over a given period of time, hence, it is measured in miles/hour, km/hr, m/s etc.
According to this question, the speedometer in a car reads 78 miles per hour.
Since the conversion factor of kilometers per hour and miles per hour is as follows:
1 kilometer per hour = 0.62 miles per hour
Then, 78 miles per hour = 125.53 kilometers per hour.
Therefore, if the speedometer in a car reads 78 miles per hour, the car's speed in kilometers per hour is 125.53 kilometers per hour.
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Answer:
D.These elements tend to gain or lose electrons easily is <em>incorrect.</em>
Explanation:
Noble gasses consist of atoms that have full rings of electrons. Electrons are what bond atoms together to create chemical compounds, and incomplete rings are needed for the process.
The epidermis, the top layer
The dermis, middle layer
The hypodermis, bottom layer
There you go!
Explanation:
Medieval number one. There you havt it.
Answer:
A). 92.02g
Explanation:
Equation of the reaction;
N2 (g)+ 2O2(g)------> 2NO2(g)
Note that the balanced reaction equation is the first step in solving any problem on stoichiometry. Once the reaction equation is correct, the question can be easily solved.
Reaction of one mole of nitrogen gas with two moles of oxygen gas yields two moles of nitrogen dioxide.
Mass of two moles of nitrogen dioxide= 2[14 + 2(16)] = 2[14+32]= 2[46]= 92 gmol-1
Therefore; Mass of two moles of nitrogen dioxide is 92
