Write the chemical formula for

A) barium chloride (Ba ion, 2 Cl ion)

B) sodium sulfide (2 Na ion, 1 S ion)

How do decomposers break down waste material and and the remains of dead organisms? A. They release enzymes onto them B. They chew them up with their teeth C. They allow the wind and rain to do it D. They tear them apart with their claws

1. Baking powder is a 1:1 molar mixture of cream of tartar (KHC4H4O6) and baking soda (NaHCO3). A recipe calls for two teaspoons (a total of 8.0 grams) of cream of tartar. How much baking soda must be added for both materials to react completely?

If 3.6 g of nitrogen is reacted with 2.6 g of hydrogen gas, is it possible to form 6.2 g of ammonia (NH3) gas?

How many significant digits are in the time measurement 60.010 seconds?

Which solution has the greatest percent ionization? (a) 0.010 m formic acid (ka = 1.8  10-4) (b) 0.10 m formic acid (ka = 1.8  10-4) (c) 0.010 m acetic acid (ka = 1.8  10-5) (d) 0.10 m acetic acid (ka = 1.8  10-5) ?

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.

Using ohm's law, explain how voltage changes in relation to current, assuming that resistance remains constant.

An average copper penny minted in the 1960s contained about 3.000 g of copper. how much chalcopyrite had be mined to produce 100 pennies?

Which pack has the greatest change in enthalpy, warm packs (such as hand warmers) or cold packs (such as an ice pack) ?

A gay cylinder what are the variables in gay-lussacs law