False because a compound is one or more elements
Answer:
A buffer system can be made by mixing a soluble compound that contains the conjugate ... 10.0 grams of sodium acetate in 200.0 mL of 1.00 M acetic acid.
Explanation:
The two ways that energy can be transferred are by doing work and by heat transfer.
The car's velocity after 5s : 10 m/s
<h3>Further explanation</h3>
Given
velocity=v=72 km/h=20 m/s
time=t = 5 s
acceleration=a = -2 m/s²
Required
velocity after 5s
Solution
Straight motion changes with constant acceleration
![\tt v_f=v_i+at](https://tex.z-dn.net/?f=%5Ctt%20v_f%3Dv_i%2Bat)
vf=final velocity
vi = initial velocity
Input the value :
![\tt v_f=20+(-2).5\\\\v_f=20-10\\\\v_f=10~m/s](https://tex.z-dn.net/?f=%5Ctt%20v_f%3D20%2B%28-2%29.5%5C%5C%5C%5Cv_f%3D20-10%5C%5C%5C%5Cv_f%3D10~m%2Fs)
The car is decelerating (acceleration is negative) so that its speed decreases
Answer:
The new volume of the gas remains the same. That is new volume of gas is 1.33 litres
Explanation:
This is because gases do not have a definite shape. They therefore take the shape of their containing vessels and hence their volumes are determined by the volume of the container.
For the question above even if some of the gas escapes, as long as there is gas present in the container, its volume remains the same, that is occupies the same space in the container