Class 11th

$CaC{O}_3\left(s\right)\to CaO\left(s\right)+C{O}_2\left(g\right)$

1 mol 1 mol

100 g 22.4 L at STP

Volume of ${}_{}$ $C{O}_2$ obtained $=22.4*\frac{25}{100}=5.6L$ $\frac{}{}$ at STP

Kindly consider the following figure

Since the water removed from the pond will be equal to the water displacement by the (man + boat) system, the level of water in the pond remains the same.

Distance travelled by the body = Sum of areas under the curve (both below and above x-axis)

$\frac{1}{2}*3*10*2$

$=30m$

For a multi electron system, the energy of orbitals increase with increase in (n + l) value.

For same n + l value, the orbital with higher value of n has higher energy.

Unit of temperature is Fahrenheit

Unit of mass is atomic mass of unit

Unit of length is light year

Unit of time is shake

In a measurement, a choice of change of different units does not change the number of significant figures.

HF molecules are associated with strong intermolecular hydrogen bonding hence its boiling point is the highest

s – block and p – block elements together are called as representative elements.

Zn (Z = 30) is a d-block element.

Frequency in the stretched wire is

$f=\frac{1}{2l}\sqrt[]{\frac{T}{\mu }}$

$f_1^2=\frac{T_1}{4\mu l^2}$

$f_2^2=\frac{T_2}{4\mu l^2}$

$\frac{T_1+T_2}{4\mu l^2}=f^2$

$f^2=f_1^2+f_1^2$

$f=\sqrt[]{{\left(80\right)}^2+{\left(150\right)}^2}=170Hz$