The atmosphere is a envelope of gases surrounding another planet and the troposphere is the lowest part of the atmosphere
The total number of moles of solute particles present in 1L (exact) of aqueous 0.057 m hno3 is 0.166 mol
Initial moles of HNO3 = 1Lx 0.083 mol HNO3/1 L
The HNO3 is a strong acid that can be completely dissociated in the following way.
HNO3→H + NO
1 mol 1 mol 1 mol
The HNO3 is dissociated into two particles (Kt and NO3). So that,
total moles particles = 0.083 mol (K) + 0.083 mol (NO) = 0.166 mol
The number of moles of solute = mass of solute ÷ molar mass of solute, where mass is measured in grams and molar mass (defined as the mass of one mole of a substance in grams) is measured in g/mol.
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14. C
15. B
16. D
17. D
18. I am not sure sorry.<span />
Answer: ammonium chloride
Explanation: The reaction equation among ammonia (NH3) and hydrochloric acid (HCl) is written as follows: NH3+HCl=NH4Cl. Ammonia is a susceptible base that reacts with hydrochloric acid, forming a compound referred to as ammonium chloride.
<u>Answer:</u>
The velocity of the bus be is 0 miles/second
<u>Explanation:</u>
Given, a bus travelled a distance of 20 miles north and 20 miles back to the starting point
Hence, total distance = 20 + 20 = 40 miles
Velocity is calculated by the formula:
Velocity = ![\frac{\text { Displacement }}{\text { Time }}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%20%7B%20Displacement%20%7D%7D%7B%5Ctext%20%7B%20Time%20%7D%7D)
Displacement = ![20+(-20)=0 \text { miles }](https://tex.z-dn.net/?f=20%2B%28-20%29%3D0%20%5Ctext%20%7B%20miles%20%7D)
Velocity = ![\frac{0}{T i m e}=0 \text { miles/second }](https://tex.z-dn.net/?f=%5Cfrac%7B0%7D%7BT%20i%20m%20e%7D%3D0%20%5Ctext%20%7B%20miles%2Fsecond%20%7D)
Therefore, the velocity of the bus is 0 miles/second