Please help with these. I have the answers, Just need help with solving step by
ID: 696814 • Letter: P
Question
Please help with these. I have the answers, Just need help with solving step by step. Please show work.
4) (8-points) A 28.0g piece of metal is dropped into 30.0mL of water in a graduated cylinder. The water level rises to 62.4mL. What is the density of the metal? 5) (10-points) 42.0g of a metal absorbs 2800. J of heat energy and its temperature rises from 20.0 C to 86.0 C What is the specific heat of the metal? 6) (10-points) A 400.0g sample of water is at 30.0° C. How many joules of energy are required to raise the temperature of the water to 45.0C? (C-41 841/g·C) ° °Explanation / Answer
4)
mass of metal = 28.0 g
volume of metal = change in volume of cylinder
= 62.4 mL - 30.0 mL
= 32.4 mL
now use:
density = mass/volume
= 28.0 g / 32.4 mL
= 0.864 g/mL
Answer: 0.864 g/mL
Only 1 question at a time please