A cube of iron (Cp = 0.450 J/g•°C) with a mass of 55.8 g is heated from 25.0°C to 49.0°C. How much heat is required for this process? Round your answer to three significant figures.

What are two different ways to tell time

What is the molar mass of H2SO4

Which conditions would result in the worst soil for growing crops? A. moderate rainfall and no extreme temperatures B. a lot of rainfall and low temperatures C. a lot of rainfall and high temperatures D. little rainfall and high temperatures

Which statements are part of the safety protocol for this lab experiment? Check all that apply. Wear a lab coat and safety goggles when performing an experiment. Always measure chemical quantities twice before adding to solution.

Which pH change represents a hundredfold increase in the concentration of H3O+? (1) pH 5 to pH 7 (3) pH 3 to pH 1 (2) pH 13 to pH 14 (4) pH 4 to pH 3

Give an example of a solution that can be seperated by simple distilation.

What is the h + concentration for an aqueous solution with poh = 3.35 at 25 ∘c? express your answer to two significant figures and include the appropriate units?

What information does a phase diagram give

Which cell structures function like power plants for plant or animal cells? A. nuclei B. vacuoles C. ribosomes D. mitochondria

A sample of argon gas, Ar (g). is placed in a 3.80 L container at 320 K. The gas pressure is 0.496 atm. How many moles of Ar gas are in the container?