Is taking a glass of water and freezing it by placing in the freezer chemical change?

The pressure of an enclosed gas depends on

How much oxygen gas can be produced through the decomposition of potassium chlorate (KClO3) if 194.7 g of potassium chlorate is heated and fully decomposes? The equation for this reaction must be balanced first. KClO3 (s) - > KCl (s) + O2 (g) A. 194.

How heat moves from one end of a solid to the other

Lens coating are made of A. teflon B. bakelite C. melamine D. PVC

In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be needed in the reaction? 18 g 54 g 72 g 90 g

If there are 2.54cm in an inch, how many inches are in 14.8cm?

Given the reaction: 2 Na (s) + Cl 2 (g) → 2 NaCl (s) The conversion factor for chlorine gas to sodium chloride is: 1 mol Cl 2 ≡ 2 mol NaCl. True or false?

Taking a cross section of a fiber can reveal what?

A? relay is a relay that not only maintains its contacts in the last position without a continuously energized coil, but also with a mechanical mechanism or remnant magnetism until it resets electrically.

What is a "curie"? A. standard charge of alpha particles B. mass of one alpha particle C. unit of radioactive disintegration D. a unit of gamma radiation