Chem quiz

What is the mole ratio of all the substances represented in this figure?

B. 2:3:2

How many total atoms are in 4Ca3(PO4)2?

B. 52

The name of a hydrate is calcium chloride dihydrate. What is its formula?

B. CaCl2 > 2H2O

The amount of product that should be produced based on stoichiomertic calculations is the?

B. Theoretical Yield

Which is the correct formula for the compound whose percent composition is shown?

C. KNO3

How many moles of atoms are in one mole of AlPO4?

A. 122.1 moles

Which are the product(s) of this chemical reaction? FeCl3 + NH4OH

A. Fe(OH)3 + NH4Cl

Which is true for the reaction shown below?

A. The mole ratio of this reaction is 6:5:6

After water is separated into its components by the process called electrolysis in figure 11-1, how will the number of particles of hydrogen compare with the number of particles of oxygen?

A. There will be twice as many hydrogen as oxygen particles

Copper (cu) is a transition element used in the making of coins. Calculate the mass in grams of 0.0420 moles of copper?

C. 2.67 g

What are the correct coefficients when this chemical equation is balanced?

D. 1,5,2

What is the molecular formula of substance 2 in figure 10-3?

D. C4H10

What is the empirical formula of substance 3 in figure 10-3?

D. C4H8

Which is the formula for the compound that contains 64.75 g Nitrogen and 185.25 g oxygen?

D. N2O5

Which are the spectator ions in the reaction shown? AgNO3 (aq) + NaCl (aq) ---> NaNO3 + AgCl

D. Na3, NO3

Which types of reactions are essentially opposites of one another?

D. Synthesis and Decomposition

What type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?

D. combustion

Which drawling in figure 11-4 shows the products of a reaction between hydrogen and chlorine?

D. d

What type of chemical reaction is shown?

D. decompostion

Whats the correct ratio of coefficients to balance this chemical equations?

c. 2:4:3