Chemistry

20. Which of the following is heterogeneous? a. Sodium Chloride b. Aluminum c. Granite d. Carbon Dioxide

Sort the following properties of sodium into physical and chemical. Items (6 items) (Drag and drop into the appropriate area below) square square square

What is the mass of 4.32 mol Gal_(3) 455 g 1,230 g 1,720 g 1,950 g

Which of these safety rules is MOST important to remember in chemistry class? (Hint...think about lab rules from brick and mortar classes and what would keep you safe!) Wear closed-toe shoes and goggles when needed Run to your lab station to be first Bring your lunch into the lab for long experiments Always taste chemicals to identify them

What makes isotopes of the same element different? number of neutrons number of electrons number of protons atomic number

The work bench in the lab should include Materials needed for the experiment Phone, keys, and backpack Chemicals with no labels Materials from the previous lab

Which of these safety rules is MOST important to remember in chemistry class? (Hint __ think about lab rules from brick and mortar classes and what would keep you safe!) Wear closed-toe shoes and goggles when needed Run to your lab station to be first Bring your lunch into the lab for long experiments Always taste chemicals to identify them

C+Darrow CD (Delta G=11kcal/mol) What would be the Delta G value (kcal/mol) of the coupled reaction? (couple it to the Xarrow Y reaction above) Only type the Delta G value (number) in the answer blank, do not add any units or anything else. square

How many protons are in the nucleus of an atom with an atomic number of 15? (type the integer, do not spell out the number; example: 2) square

__ 2. What is the dependent variable? A) the number of colors B) the amount of sodium bicarbonate C) the amount of calcium chloride D) the amount of universal indicator