There are 81 amino acid residues in the precursor molecule of bovine insulin. What is the least number of bases that must be in the DNA chain that codes for this molecule?

Nitrogen gas and hydrogen gas react to form ammonia according to the following thermochemical equation. 3H2+N2⟶2NH3ΔH=-96kJ Write the balanced chemical equation for a reaction involving these substances with the following change in enthalpy.

How many stirs do u need to dissolve sugar in water and salt?

Why would a person could jump further on moon than on Jupiter?

Carbon has an atomic mass of 12amu and an atomic number of 6. how many neutrons, protons and electrons are in a neutral atom of carbon-12? answers

Determine How is rock classification related to the rock cycle?

How much heat is needed to raise the temperature of 75 g of a substance by 15 C when the specific heat is 0.92 J/g-C?

A nitric acid solution flows at a constant rate of 5L/min into a large tank that initially held 200L of a 0.5% nitric acid solution. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 10L/min.

How many molecules are in 237g (about a cup of water)

3. A compound was analyzed and found to contain 9.8 g of nitrogen, 0.70 g of hydrogen, and 33.6 g of oxygen. What is the empirical formula of the compound?

A 126-gram sample of titanium metal is heated from 20.0°C to 45.4°C while absorbing 1.68 kJ of heat. What is the specific heat of titanium?