How many elements are in 2CaCO2 and C8H10N4O2

Calculate q (in units of joules) when 1.850 g of water is heated from 22 °C to 33 °C

How is a column of mercury in a barometer affected when moved to a higher altitude? Select one: A. The column of mercury will be greater than 760 mm Hg. B. The column of mercury will be less than 760 mm Hg. C.

Many metals react with oxygen gas to form the metal oxide. for example, calcium reacts as follows. 2 ca (s) + o2 (g) → 2 cao (s) you wish to calculate the mass (g) of calcium oxide that can be prepared from 4.23 g of ca and 2.87 g of o2.

What the reaction rates chart means

Diana reaction that had a chemical change. Which two changes could be evidence of this change?

Balnce the following molecular equation and write net ionic equation NaOH+H2SO4-Na2SO4+H2

Describe in words the reaction represented by the equation and include a description of the composition of each kind of molecule 2h2+02=2h20

Potassium chloride, kcl, sodium sulfate, na2so4, glucose, c6h12o6, carbon dioxide, co2 and ammonium phosphate, (nh4) 3po4, are soluble in water.

Use the periodic table to select the element from the drop-down menu that has the correct relative electronegativity.

List the symbols for all the elements with electron configurations that end as follows. Each n represents an energy level.