Answer:
The position of the moon during its orbit around Earth.
Explanation:
Answer:
1.An initial observation is the measurement that you take before you start any process that might cause a change. When you compare your subsequent observations with the initial one, you will see whether any change has taken place, and you will be able to measure the change.
Explanation:
D ko po alam yung iba
Answer:
Explanation:
a) Volume of the gas nRT / P
= 1,04 X 8.3 X 298 / 11 X 10⁵ m³
= 233.85 x 10⁻⁵ m³
= 233 x 10⁻² L
2.33 L
P₁V₁ / T₁ =P₂V₂/T₂
(11 X 2.33) / 298 = (1 X 24.2) / T
T = 281.37 K
= 8.37 degree
b ) w = p x change in volume
= 10⁵ x ( 24.2 - 2.33 ) x 10⁻³ J
= 21.87 X 10² J
2187 J
q = n x Cp x (25 - 8.37 )
= 1.04 x 35.66x 16.63 J
= 616.65 J
ΔU = Q - W
= 616.65 - 2187 J
= - 1570.35 J
=
=
Answer : The formula that represent hydrogen ions in an aqueous solution is, 
Explanation :
As we know that the formula of water is, 
.
In an aqueous solution, it dissociates to give hydrogen ion and hydroxide ion.
The dissociation reaction is:
The formula of hydrogen ion is,
The formula of hydroxide ion is, 
Hence, the formula that represent hydrogen ions in an aqueous solution is,
The ionic formula of sodium oxide would be Na20
