How much thermal energy is required to heat 15.2g of a metal (specific heat = 0.397 J/g * degrees celsius) from 21.0 degrees celsius to 40.3 degrees celsuis?

Which of the following characteristics did john Dalton include in his description of the atom? can be more than one. A. Atoms are smaller than quarks. B. In any element all the atoms are the same. C. Atoms exist only on Earth D.

Which phrase can accurately be placed in the middle, within both circles? a) has a ph of 7 b) dissolves metals eliminate c) ionizes in water d) turns red litmus paper blue?

If there are 50 grams of U-238 on day zero of radioactive decay, how much will there be after 4.5 billion years? A) 0.0 grams B) 10 grams C) 25 grams D) 50 grams

The product formation was decreased when a substance b was added to an enzyme reaction. more substrate being added did not increase the amount of produce formed. based on this we assume that substance b could be

The diagram shows a ball resting at the top of a hill. Which statement best describes the energy in this system? The potential energy in the system is greatest at X. The kinetic energy in the system is greatest at X.

Consider the statement, In the following process, the number of particles increases, so ΔS for this process must be positive. MgS (s) ⇄ Mg2 + (aq) + S2 - (aq) Is this statement true?

How do you read a data table?

In the manufacturing process of sulfuric acid, sulfur dioxide is reacted with oxygen to produce sulfur trioxide.

What is the pH of a solution with hydrogen ion concentration of 1 x 10^-6 M?

What fraction can be used in conversion of 32 m3 to mm3