The names of the elements and number of atoms of the given elements, present in the following compounds are as follows:-Name of ElementChemical Name & FormulaNumber of atoms present in Compound(A) Sodium Sulphate(Na2SO4)Sodium-2, Sulfer-1, & Oxygen-4. Total - 7atoms(B) Quick LimeCalcium Oxide (CaO)Calcium-1, Oxygen-1. Total - 2atoms(C) Baking SodaSodium Hydrogen ... Read More

Representation of $\frac{-23}{7}$ on number line :To represent $\frac{-23}{7}$ on the number line, 1) Draw a number line.2) As the number $\frac{-23}{7}$ is a negative number so it will be on the left of zero. The number $\frac{-23}{7} = -3\frac{2}{7}$ lies between $-3$ and $-4$.3) Divide the line segment between -3 and -4 ... Read More

Ohm's law states that the voltage across a resistor is directly proportional to the current flowing through it. Ohm's law is named for German physicist Georg Ohm.In simple terms, Ohm's law gives the relationship between current, voltage, and resistance. Mathematically this relationship is given as, V = I $\times$ R, ... Read More

Given, Q is directly proportional to P.Q∝PThis implies, Q=k(P)  where k is any constant.When Q=28, P=428=(k)x4k=28/4k=7a. Equation connecting P and Q is Q=4P.b. Value of Q when P=5 is, Q=(7)x(5)Q=35.c. Value of P when Q=42 is, 42=(7)PP=42/7P=6.Read More

Electroscope :   It is a scientific instrument used to determine the Electric Charges in a body. Uses of Electroscope : It is used to detect static charges. It is used to determine the nature of electric charges. It is used to compare the magnitudes of two different charges.  

Natural resources are resources that exist in the environment and are developed without any actions of humankind. This includes air, sunlight, water, vegetation, soil (includes all minerals), animals, and fossil fuels. On the basis of origin, natural resources are divided into two types: 1. Biotic- These resources are ... Read More

Multiplication of Integers:Integers can be either positive or negative, with the only exception of 0, which is neither positive nor negative. Positive integers: 1, 2, 3, 4, 5, etc.Negative integers: –1, –2, –3, –4, etc.A negative integer can be represented as a positive integer multiplied by –1. For example,  –5 = ... Read More

Light passes through only transparent objects. Translucent objects allow light partially and opaque objects block the light.  Light won't pass through any kind of objects normally. It changes direction many times and gets scattered as it passes through. But it passes completely when traveling through transparent objects.  But some part ... Read More

Complementary angles: The angle that is added to another angle to make the sum 90 degrees is called a complementary angle. For example, The complementary angle of 20 is 70 and similarly, The complementary angle of 40 is 50. Supplementary angles: The angle that is ... Read More

Given: Weight of type 1 rice = 13.23 kg Weight of type 2 rice = 15.45 kg To find: We have to find the number of packets and the cost of each packet.Solution: Total price of type 1 rice = 13.23 x 30 = 396.90 Rs. Total price of type 2 ... Read More