Answer:
d
Explanation:
its d because a beta particle has a negative charge
Answer:
B, increases rate of collisions
Explanation:
Answer:
Na
Explanation:
Na Because it's exist in group 1
Answer: b)298 K converts to 24.9 °C, so the water would remain in its liquid state
Explanation: Kelvin is an absolute temperature scale, that means that 0K (zero Kelvin) is the lowest temperature possible and compare to Celsius scale the change of 1 degree is the same, but 0°C is the same as 273,1K
So, in order to convert Kelvin to Celsius you have to subtract 273,1
In this case, 298K - 273,1 = 24,9°C
This temperature is room temperature, so water is in liquid state.
The two dimensions of aluminum foil are given 13.72 cm and 8.63 cm respectively with mass 3.1 g.
The density of aluminum is . It is defined as mass per unit volume thus, volume of aluminum can be calculated as follows:
Putting the values.
The volume of cuboid is , the length and breadth are given, height can be calculated as follows;
Putting the values,
Or, approximately 9.7\times 10^{-3}cm
Therefore, thickness of aluminum foil is