Answer:
option A
Explanation:
500kg weighs way more than 50kg at the same acceleration.
#2 is solid because most exist naturally as solids
Answer:
Molarity = 54.50 M
Explanation:
Molarity is defined as the number of moles of a solute in 1 liter of solution. It has mol/l unit.
Molar mass of glucose, C6H12O6 = (6*12) + (1*12) + (16*6)
= 72 + 12 + 96 = 180g/mol
Density of glucose solution = 1.03g/ml
Density in g/l = 1.03g/ml * 1ml/10^-3l
= 1030g/l
10.5% mass of glucose = 10.5/100 * 180
= 18.9g/mol
Molarity = density (g/l)/molar mass (g/mol)
= 1030/18.9
= 54.50 M
1) Atomic radius: It increases from left to right in a period
2) Ionic radius: It increases from left to right in a period
3) First ionization energy: It increases from left to right in a period
4) Melting point: Generally decreases from left to right in a period
Answer: -
The temperature change for water in the 4-liter container will be
a.half that of the 2-liter container.
Explanation: -
The increase in temperature of a substance when heat is given to it is given by the formula
Q = m x c x ΔT
Where Q is the heat supplied, m is the mass of water, c is the specific heat of water and ΔT is the change in the temperature of water.
Or ΔT = ![\frac{Q}{m x c}](https://tex.z-dn.net/?f=%5Cfrac%7BQ%7D%7Bm%20x%20c%7D)
From the formula we see that for the same amount of heat, increase is temperature is more for less amount of mass.
We know that more the volume of water, more the amount of water present and consequently more the mass of water.
Thus for the same amount of heat supplied, the temperature increases more for a lesser volume of water.
Let density of water be d.
Mass of 4 L= volume x density = 4 L x d
T 1 = ΔT for 4 L =
=
Mass of 2 L= volume x density = 2 L x d
T2 = ΔT for 2 L =
=
On taking ratio
= 2
Thus the temperature change for water in the 4-liter container will be
a.half that of the 2-liter container.