Write the word equation for the chemical reaction: Zn (s) + 2HCl2 (aq) - - - >ZnCl2 (aq) + H2 (g)

Solid block of exactly 100.0cm3 has a mass of 153.6 g. Determine it's density.

Karyotypes can tell us if someone may have a genetic disorder. true false

I am something that is alive or was once alive. metric Robots Abiotic Factors Bionic Flavors Biotic Factors

The sun's inner core is the hottest part of the sun true or false

Drag the tiles to the correct boxes to complete the pairs. Chromium is a transition metal, and oxygen has an oxidation number of - 2. Use this information to match each compound to its chemical formula.

Is it possible for 2 different elements to have the same atomic number

How is the mole similar to a dozen?

What element with the highest electronegativity value? Cesium calcium helium fluorine

How many neutrons and electrons are in Oxygen⁻¹⁷ isotope?

What is science all about?