How many identified isotopes does samarium have?

What is true at STP? a. Temperature is 273.15 Kelvin. b. One mole of gas occupies one liter of volume. c. Pressure is 101 atmosphere. d. Volume is 4.2 liters.

When dissolved in water, baking soda is basic. the ph of baking soda (sodium bicarbonate) is closest to:?

What is the molecular mass formula of the smallest neutral compound of carbon and oxygen

Explain how the following changes would affect the rate of the reaction of 2-bromo-3-methylbutane with methanol: Part A The alkyl halide is changed to 2-chloro-3-methylbutane. The alkyl halide is changed to 2-chloro-3-methylbutane.

What is the complete ground state electron configuration for the selenium atom?

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?