Chemistry, 24.03.2020 14:33 yesseniaroman21

Pure substance x is a green powder. when heated, it gives off a gas and changes to a black powder. is substance x an element or a compound? give reasons

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 05:00, arpolin15

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Answers: 2

continue

Chemistry, 22.06.2019 15:00, kandi2565

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Answers: 2

continue

Chemistry, 22.06.2019 23:30, znewkirk4741

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.

Answers: 3

continue

Chemistry, 23.06.2019 04:10, mojio22

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability

Answers: 3

continue

You know the right answer?

Pure substance x is a green powder. when heated, it gives off a gas and changes to a black powder. i...