14.4.2 Test (CST): Changes in Matter Question 5 of 11
A metal shovel is left outside in the rain for a week. The
surface becomes reddish-brown and begins to flake off.
Which statement best explains these changes?
A. The metal underwent a change of state.
B. The metal dissolved in the rainwater.
C. The metal reacted to form a new substance.
D. The metal neutralized substances in the rain.
SUBMIT

If you want to create an electrical current, which situation would produce a solution capable of this

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)