Describe the ways you can know that a chemical reaction has occurred.

A sample of 0.53 g of carbon dioxide was obtained by heating 1.31 g of calcium carbonate. what is the percent yield for this reaction? caco3 (s) ⟶ cao (s) + co2 (s)

Hy did dr. tyson decide to exclude pluto from the exhibits of planets

If 21 mL of gas is subjected to a temperature change from 10.0°C to 120°C and a pressure change from 1.0 atm to 15 atm, the new volume is

In a Lewis dot diagram how many dots would the elements Cd have?

Acetylene gas (C2H2) used in welding, pro - duces an extremely hot flame when it burns in pure oxygen according to the reaction 2 C2H2 (g) + 5 O2 (g) - → 4 CO2 (g) + 2 H2O (g). How much CO2 is produced when 20000 g of C2H2 burns completely?

A cube of aluminum (density = 2.70 g/ml) has a mass of 17.2 g. what is the edge length of the cube?

Which ion makes the waste alkaline in sodium chloride

How to determine number of electrons lost or gained?

How many chemical bonds do you expect ekasilicon to have and why

Express the rate of reaction in terms of the change in concentration of each of the reactants and products. 2A (g) → B (g) + C (g)