The composition of stars can be determined by examining their colors.

Explain whether nitrogen atoms will form a bond with other atoms

E. Answer the following questions in brief. 1. Which is a synthetic fibre: nylon or Jute? 2. Which simple unit forms polymer? 3. Which type of fibres are manufactured in factories? 4. Which fabric is also known as artificial silk? 5.

Which statement correctly describes an atom of the element helium? A. An atom of helium has eight electrons in its outer energy B. An atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. C.

Identify the element that contains 87 electrons

How to remove a musty smell from a wool coat?

A container with a volume of 3.46 liters contains a gas at a pressure of 1.30 atmospheres and a temperature of 274.27 Kelvins. How many moles of gas are in the container?

Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C?

What is the H3O + ion concentration of a solution that has an OH - ion concentration of 1.0 * 10^-3M? A) 1.0 * 10^-3M B) 1.0 * 10^-7M C) 1.0 * 10^-11M D) 1.0 * 10^-14M

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12

Most mutagens have what kind of an effect on an organism?