Of the following, which does not signify a chemical reaction?

1) tarnish

2) release of heat

3) changing state

4) release of gas

A 35.0 g piece of metal wire is heated, and the temperature changes from 21 degrees Celsius to 52 degrees Celsius. The amount of heat absorbed is 320 calories. What is the specific heat of the metal?

What is the amount of energy needed to heat 2.3 g of aluminum from 6.2oC to 46.9oC in Joules?

Which is the best example of technological design

From what names do some chemical symbols come from

When a group 1 element and a group 16 element bond, the subscripts in the formula will always be?

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.

What element has the electron arrangement 2,8,4?

If you get pregnant in Dec how long will it take for u to get to second trimester

Name the following compound HClO