Answer:
The flask has to be closed during the hydrochloric acid and sodium carbonate reaction as the resultant gas got trapped inside the closed flask.
Explanation:
The hydrochloric acid and sodium carbonate reaction was exothermic that caused the pressure to decrease. The flask has to be closed during the hydrochloric acid and sodium carbonate reaction as the resultant gas got trapped inside the closed flask.
In exothermic reactions, energy is produced in the form of heat or light.
Answer:
Science does not change across region.
Explanation:
Regardless of language barriers or methods of learning, science is the study of fundamental concepts that explain how our world and the universe works.
Answer:
The acceleration of ball is 18 m/s².
Explanation:
Definition:
The acceleration is rate of change of velocity of an object with respect to time.
Formula:
a = Δv/Δt
a = acceleration
Δv = change in velocity
Δt = change in time
Units:
The unit of acceleration is m.s⁻².
Acceleration can also be determine through following formula,
F = m × a
a = F/m
Given data:
Mass of ball = 0.60 kg
Force on it = 10.8 N
Acceleration = ?
Solution:
a = 10.8 N/0.60 kg
a = 18 N/kg
N = kg.m/s²
a = 18 kg.m/s² / kg
a = 18 m/s²
The element that would have 4 electrons in its outer p orbital, or p subshell would be Oxygen. Oxygen's electronic configuration would suggest that there are 4 electrons in its p sub shell.
O : 1s^2 2s^2 2p^4.
