Magnesium in hydrochloric acid forms H2 (hydrogen) gas according to the balanced chemical equation:
Mg + 2HCl→H2 + MgCl2
We are given –
- Final velocity of car is, v= 0
- Initial velocity of car is, u= 100 km/hr
- Time taken, t is = 3 minutes or 180 sec
Here–
![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\pink{\bf \longrightarrow Initial\: velocity = 100 \:km/hr}](https://tex.z-dn.net/?f=%20%5Cpink%7B%5Cbf%20%5Clongrightarrow%20%20Initial%5C%3A%20%20velocity%20%3D%20%20100%20%5C%3Akm%2Fhr%7D)
![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\sf \longrightarrow Initial\: velocity = \dfrac{ 100 \times 1000}{3600} \:m/s](https://tex.z-dn.net/?f=%20%5Csf%20%5Clongrightarrow%20%20Initial%5C%3A%20%20velocity%20%3D%20%5Cdfrac%7B%20100%20%5Ctimes%201000%7D%7B3600%7D%20%5C%3Am%2Fs)
![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\pink{ \bf \longrightarrow Initial\: velocity = 27.78\: m/s}](https://tex.z-dn.net/?f=%5Cpink%7B%20%5Cbf%20%5Clongrightarrow%20%20Initial%5C%3A%20%20velocity%20%3D%2027.78%5C%3A%20m%2Fs%7D%20)
Now –
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![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\purple{\bf \longrightarrow Acceleration = \dfrac{Final\: Velocity -Initial \:Velocity }{Time}}](https://tex.z-dn.net/?f=%20%5Cpurple%7B%5Cbf%20%5Clongrightarrow%20%20Acceleration%20%20%3D%20%5Cdfrac%7BFinal%5C%3A%20Velocity%20-Initial%20%20%5C%3AVelocity%20%7D%7BTime%7D%7D)
![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\purple{\bf \longrightarrow Acceleration = \dfrac{v -u}{t}}](https://tex.z-dn.net/?f=%20%5Cpurple%7B%5Cbf%20%5Clongrightarrow%20%20Acceleration%20%20%3D%20%5Cdfrac%7Bv%20-u%7D%7Bt%7D%7D)
![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\sf \longrightarrow Acceleration = \dfrac{(0- 27.78)}{1800}](https://tex.z-dn.net/?f=%20%5Csf%20%5Clongrightarrow%20%20Acceleration%20%3D%20%5Cdfrac%7B%280-%2027.78%29%7D%7B1800%7D)
![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\sf \longrightarrow Acceleration =\cancel{ \dfrac{- 27.78}{1800}}](https://tex.z-dn.net/?f=%20%5Csf%20%5Clongrightarrow%20%20Acceleration%20%3D%5Ccancel%7B%20%5Cdfrac%7B-%2027.78%7D%7B1800%7D%7D)
![\qquad](https://tex.z-dn.net/?f=%5Cqquad)
![\purple{\bf \longrightarrow Acceleration = -0.15 \: m/s^2}](https://tex.z-dn.net/?f=%20%5Cpurple%7B%5Cbf%20%5Clongrightarrow%20%20Acceleration%20%3D%20-0.15%20%5C%3A%20m%2Fs%5E2%7D%20)
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Given that the volume and amount of water are kept constant,
P/T = constant
P₁/T₁ = P₂/T₂
Normal atmospheric pressure is 746 mmHg and normal boiling point of water is 100 °C.
746/100 = 589/T₂
T₂ = 79.0 °C
Answer: 1. 3.914 × ^10-4 | 2. 4.781 × ^10-1
Explanation:
Answer:
False
Explanation:
While we do know that A. Leeuwenhoek used a simple microscope that consisted of only 1 lens, Hooke used a compound microscope. Although, after trying a compound microscope, Hooke found out that it strained his eyes and continued to use a simple microscope for his <em>Micrographia</em>.
Thus, we can say that the (compound) microscopes used today are different than the (simple) microscope used by Hooke and Leeuwenhoek.