How many grams of sodium nitrate does it take to get 3.5% sodium nitrate in a 250g solution?

What is the minimum number of nucleobase "digits" required to code for the 20 different amino acids? (Groups of nucleotides, each coding for a single amino acid in a protein chain, are called "codons" by biologists.

On a flight to Europe, you notice that the packages of peanuts are puffed up. Why? 1. The jet is over-pressurized at high altitudes, thus causing the gas inside the packages to expand. 2.

Beaker A contains 100.0 g of water initially at 10EC. Beaker B contains 100.0 g of water initially at 20°C. The contents of the two beakers are mixed.

The component which dissolves in a solution is called the ...

What does the frequency of a wave represent

What force (in newtons) is required to accelerate a body with a mass of 32 kilograms at a rate of 12 m/s2? If a body with a mass of 4 kg is moved by a force of 20 N, what is the rate of its acceleration?

A. draw the structure of the tetrahedral intermediate initially-formed in the reaction shown. reactions of esters with

The water level in a graduated cylinder stands at 20.0 ml before and at 26.2 ml after a 16.74 g metal sample is lowered into the cylinder. what is the density of the sample. what metal is the sample most likely to be

What are the tube feet on a star fish

What kingdom is humans in!