A 4.000 g sample of iron was heated from 0.0°C to 21.0°C. If it has a specific heat of 0.440 kJ/kg °C, how many kilojoules of heat does it absorb?

Why the radius of an atom cannot be determined precisely?

What name is given to a metal strip deep into a solution of salt

Which process releases the energy that eventually produces lightning in a thunderstorm? 0 Water droplets freeze. Water condenses to form clouds. O Moisture enters the upper atmosphere. Air pressure decreases, causing rapid air movement.

1. in the 1930s windmills were widely used to generate electricity on most farms in the united states which kind of energy resource is used in windmills? A. recyclable energy B. nonrenewable energy C. renewable energy D. potential energy 2.

Explain why the energy passing from a row of toppling dominoes is like the energy passing through an ecosystem.

A diatomic gas has the molar mass of 38.00g/mol. what is the possible formula?

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L? 0.025 L 0.0025 L 25 L 2.5 L

What do you use to measure mass

A salt shaker filled with 17.0g sodium chloride contain how many moles?

When a radioactive decay occurs what is released? A. Only protons and neutrons B. Only electrons C. Protons/Neutrons, beta particle, gamma ray D. Only gamma rays