Select the correct formula for the polyatomic ion.

The formula for ammonium carbonate:

NH4HCO3

NH4CO3

(NH4) 2CO3

Why is it better to use several trials of a titration rather than one trial to determine the concentration of a solution of unknown concentration?

When is it fair to compare the results of two experiments? n is it fair to compare the results of two experiments? A. when the conditions of the experiments are the same B. when the same person does both experiments C.

As a consequence of the discovery of the nucleus by Rutherford, which model of the Atom is thought to be true

1) What Conclusion can be drawn about relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? A) Properties of elements are related to atomic numbers.

Does the density of a gas depend on the molar mass of a gas?

Which states of matter have no definite volume?

Which weighs more 10g of iron or 10g of water

Which pair of elements would combine to form an ionic compound? а b sodium and calcium sodium and chlorine carbon and oxygen carbon and sulfur с d

How many moles are there in 545g of Fe2O3?

How are magic minerals different from Felsic minerals? A. Mafic minerals contains lower levels of iron and magnesium. B. Mafic minerals contain more dark-colored, high-density minerals C.