(I need helppp pppllleeeaeee)
A 2.8 g sample of pure metal requires 10.1 J of energy to change its
temperature from 21°C to 36°C. What is this metal?

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate

Who examines and coordinates the cleanup of polluted sites?