Answer:
Explanation:
gram of Copper sulphate in 350 g solution is 32 x 3.5 = 112
in term of mol = 112 / 159.5 = 0.7022
after crystallisation, gm of copper sulphate in the solution
= 43.75
in term of mole
43.75/159.5 = 0.2743
mole that got precipitated in hydrated form = 0.7022 - 0.2743 =0.4279
in terms of gm of hydrated copper sulphate = .4279 x mol weight of hydrated copper sulphate = .4279 x 249.5 = 106.76 g .
Answer: 1.7 g
Explanation: When it is filled with an unknown gas, the mass increases to 1.7 g.
The correct answer is A, <span>When particles pass close enough to one another, their attractions pull them together, and then they bounce apart with no gain or loss of energy.</span>
Hi!
The answer is 8 m/s^2
<h3>Explanation:</h3>
Acceleration is defined as the rate of change of an object's velocity, per unit time. Meaning, the rate at which an object is increasing/decreasing its velocity with the passage of time in a given period.
If an object is moving at constant velocity, its acceleration would be 0, because there is no change in velocity. In our case, the velocity is increasing, and to calculate this, we will use a simple formula,
acceleration = change in velocity / time
and change in velocity is calculated by subtracting the value of initial velocity (u) from final velocity (v).
<h3>Our known values are:</h3>
u = 7m/s
v = 15m/s
t= 1s
a = ?
<h3>Putting the values in the equation for acceleration:</h3>
a = u - v / t
a = 15 - 7 / 1
<u>a = 8 m/s^2</u>
Hope this helps!
Answer:
the answer is c hope this helps
Explanation: