Which is the equation of a circle with its center at (-4,2) and a radius of 4?

Select one:

a. (x+4) 2 + (y-2) 2 = 16

b. (x-4) 2 + (y+2) 2 = 16

c. (x-4) 2 + (y+2) 2 = 4

d. (x+4) 2 + (y-2) 2 = 4

What is the correct name of 2-Isopropyl-2-methylpentane

The part of an experiment used to compare all the other groups

If 147 g of znf2 (ksp = 0.0300) is added to water to make a 1.00 l solution, what is the [f-] concentration in the solution in molarity?

A sample of carbon dioxide occupies 2.77 L at a pressure of 18.1 psi and a temperature of 56ºC. What pressure will the carbon dioxide exert if the volume is increased to 4.81 L while the temperature is held constant?

Identify the compound with the smallest dipole moment in the gas phase. identify the compound with the smallest dipole moment in the gas phase. lif cl2 clf hf

Which of the following statements is true? Selected Answer: D. At least two of the above statements (A-C) are true. Answers: A. Ions are formed by adding or removing protons or electrons. B. Scientists believe that solids are mostly open space. C.

Does anybody know which element from the periodic table that has 19 electrons and 24 neutrons, for atomic charge.

Given the following reaction 2Al + 3Cl2 - -> 2AlCl3 How many grams of AlCl3 aluminum chloride will be produced from 125 g of Al and 125 g of Cl2?

Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and potassium chloride when heated. KClO3 (s) → KCl (s) + O2 (g) [unbalanced] What mass of oxygen gas is formed if 26.4 g of potassium chlorate decomposes completely?

Explain the iodine clock reaction.