Which biological molecule is in the shape of a double helix?

A. Enzyme

B. Deoxyribonucleic acid (DNA)

C. Amino acid

D. Ribonucleic acid (RNA)

What state of matter is fire?

What is the electron structure of a beryllium ion with a net ionic charge of + 2? 1s1 1s2 2s1 2s2

What is the function of the structure labeled A? It pumps blood over the internal organs. It aids in crawling, digging, and feeding. It forms the outer wall of the animal's body. It delivers oxygen to the blood.

Calculate q, w, ΔE, and ΔH, when 175 g of water evaporates at 1.00 atm and 100.0 °C. The heat of vaporization of water is 40.7 kJ/mol. q = kJ w = kJ ΔE = kJ ΔH = kJ

Which part of an atom has a negative charge? electron neutron nucleus proton

Use the unbalanced equation NH3+O2--> NO+H2O to find the mole ratio between NH3 ad O2

Explică rolul chimiei în protejarea mediului înconjurător?

A sample of neon gas has a volume of 2.85 L and a temperature of 15 °C, under a constant pressure. What is the new temperature (in °C), if the volume is decreased to 1.45 L?

Which type of chemical reaction occurs in Ca+CI2 CaCI2

Which of the following organisms are carnivores? Producers Omnivores Consumers Decomposers