A sample of a compound contains 9.11 g Ni and 5.89 g F. What is the empirical formula of this compound?

A.) NiF

B.) Ni3F2

C.) NiF2

The names of the compounds FeS, NaCl, NaOH, and Pb (CN) 2 all end in the suffix A. - ite. B. - ate. C. - ic. D. - ide.

Which of the following correctly provides the name and formulas of polyatomic ions

A scientist took a sample of enzymes from cow saliva and mixed them with a form of starch found in grains. After a while the starch broke into many smaller molecules. This shows that Question 2 options: cows should not be fed grains.

A carbon atom can bond to four other atoms because it has a. four different cations. c. two inner energy levels. b. four valence electrons. d. no protons in its nucleus.

Which compound is used to make asphalt?

Moles of Zn (NO3) 2 in 131.50g of this substance.

Each degree on the Kelvin scale equals: 1°C 10°C no relationship (different scale) 100°C

2C (s) + 2H2 (g) → C2H4 (g) : ΔH = + 52.4 kJ/mol Which statement about this reaction is correct?

A chemist dissolves 660. mg of pure hydroiodic acid in enough water to make up 300. mL of solution. Calculate the pH of the solution. Round your answer to 3 significant decimal places.

What type of radiation wave from the Sun does this graphic display? answer choices: x rays microwave visible ray infrared ray