Molecules made from units of identical compounds linked by covalent bonds are called

What is accuracy? The same as precision It refers to how closely individual measurements agree with each other. It referes to how closely a measured value agrees with the correct value. It increases with the number of measurements.

What is the value of 200c on a Kelvin scale

What is the voltage of galvanic cell made with magnesium? A. - 0.54 v B. 0.54 v C. - 4.2 v D. 4.2 v

A molecular biologist measures the mass of cofactor a in an average yeast cell. the mass is 41.5 pg. what is the total mass in micrograms of cofactor a in a yeast colony containing 105 cells? write your answer as a decimal.

The vapor pressure of ethanol is 54.68 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin. Calculate the vapor pressure of the solution at 25 °C when 8.054 grams of saccharin, C7H5NO3S (183.

Describe a chemical formula give an example

Consider the reaction between barium chloride and sodium sulphate. If 25.0 mL of 0.75 M barium chloride react, how many grams of solid are produced?

Which of the following is the correct definition of nuclear energy? energy produced from the splitting of atoms energy an object has because of its motion or position energy stored in chemical bonds of molecules energy resulting from the flow of

Ethyl acetate reacts with H2, in the presence of a catalyst to yield ethyl alcohol: C4H8O2 + 2H2--> 2C2H6O. A. How many grams of ethyl alcohol are produced by reaction of 2.7 mol of ethyl acetate with H2? B.

Why is it incorrect to balance a chemical equation by changing the subscripts?