What biological sample do home pregnancy tests use to detect pregnancy?

Salinity is a measure of which of the following in water? a. carbon dioxide b. oxygen c. dissolved salts d. sand

According to their locations on the Periodic Table, argon (Ar) and neon (Ne) are A. Ionic B. Radioactive C. Liquid metals D. Noble gases

How many moles in 43 liters of co2 at stp?

How many Br-ions are present in 1 mole of FeBr3

The density of silver is 10.5 g/cm3. what is its density in ng / (mm) 3

The week of Feb. 29, 2016, PBS aired a documentary on sending humans halfway to space in the late 1950's using balloons. They filled different balloons with different gases - some with H2 and some with He. Which balloon should go higher? Why?

What form of energy provides power for a gas stove? A. nuclear energy B. electrical energy C. chemical energy D. sound energy Can you explain the answer for me?

Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft*15.0 ft*8.60ft.

A certain ore is 34.4% nickel by mass. How many kilograms of this ore would need to dig up to have 30.0g of nickel?

Are the chemical reactions that take place when a battery connected endothermic or exothermic