Which development in human history first made waste disposal a problem?

A. Decrease in birth rate

B. Growth of cities

C. Increase in agriculture

D. New diseases

The products of a balanced neutralization reaction between HNO₃ and Ca (OH) ₂ are ... ? 1:CaNO₃ + H₂O 2:Ca (NO₃) ₂ + H₂O 3: CaNO₃ + 2H₂O 4: Ca (NO₃) ₂ + 2H₂O

The pH of a solution is 6.5. What is the pOH?

Is straining cooked pasta from water a physical or chemical separation

Describe the type of energy a ball sitting on the floor has.

What is the definition of crust?

A sample of bismuth weighing 0.687 g was converted to bismuth chloride by reacting it first with HNO3, and then with HCI, followed by careful evaporation to dryness. The mass of the bismuth chloride obtained was 1.032 g.

When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution results. Once the solution is prepared, water is now considered what part of the solution?

1. How is pressure affected as depth increases? 2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? 3. How is temperature affected when? (a) the depth increases (b) the latitude increases 4.

Are nails in a jar with water a chemical change

What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solution? Answer in units of M.