How many grams of Copper are required to form 250. g of Ag? (MM Cu = 63.55 g/mol; MM Ag=107.87 g/mol)

options:

295 g

842 g

74 g

148 g

Write yes if the proper safety procedures are being followed and no if they are not. Then give a reason for your answer. Bubba cannot find matches to light his Bunsen burner.

2. Approximately how much salt can 100g of water hold at room temperature (25°C)

Examine the general structure of a molecule. C is bonded to R to the left, C O O H above right, H right, and N H 2 below left.

6. Identify the type of reaction shown by this chemical equation: 2A1 + Cl2 → 2AICI

Which does not contain a lens? A. A camera B. An eye C. Binoculars D. A mirror

Why is water (H2O) considered the "universal solvent"?

Which notations represent hydrogen isotopes?

Which of the following statements is true? Question 5 options: Chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not.

2 human activities that contribute to runoff into water systems

Which of the following is an example of geographic isolation? A. a population of salmon dies out because they cannot find food. B. a zebra with a long mane moves into a population of zebras with short manes. C.