If a color change occurs when two solutions are mixed is it true that a chemical react has probably taken place?

Bismuth oxide reacts with carbon to form bismuth metal. When 414 g ot Bismuth oxide react with excess carbon, how many moles of Bi form

Which is larger atoms or molecules

64.0 grams of Sulfur Dioxide absorbed 5.00 kJ of heat and immediately evaporated. With this information, calculate its molar enthalpy of vaporization in units kJ/mol.

Define ionization energy and explain why the second ionization energy of any element is higher than its first ionization energy.

What are groups 1, 2, and 3 examples of on the periodic table

Which statement is true about the speed of light waves in a medium? a. Depends on the temperature of the light wave b. Decreases with a decrease in density of medium c. Decreases with an increase in density of medium d.

What's a certain indicator that a molecule is polar? the molecule has a nonpolar covalent bond and the dipole is cancelled due to symmetrical arrangement of atoms the molecule has a polar covalent bond and the dipole is cancelled due to symmetrical

In the synthesis of barium carbonate from an alkali metal carbonate (M2CO3 where M is one of the alkali metals) a student generated 3.7 g of barium carbonate from 2.0 g of their alkali metal carbonate.

Give the state of matter that water is in as it moves through earths system

What happens to the volume of a substance as temperatures rises?