How does a homemade balloon barometer work and how does a real one work

What is the molecular structure of vegetable oil? What make vegetable oil non-polar?

When was Carbon discovered? (The element from the periodic table)

What is the mass of a liquid having a density of 1.40 g/mL and a volume of 3.090 L

Which of these sets of elements has similar properties? chromium, magnesium, iron, cobalt oxygen, nitrogen, carbon strontium, magnesium, calcium, beryllium hydrogen, helium, neon

A graduated cylinder was filled with water to the 25.0 mL mark and weighed. Its mass was 105.5g. An object made of an unknown metal was placed in the cylinder and completely submerged in the water. The water level rose to 30.7 mL.

Where does transcription happen? why is it only in this location?

True or false during decomposition nitrogen gas is changed into nitrogen compounds

Which of the following is a suggested practice to invite families to participate in decision-making and goal-setting for their child? A. Advocacy events B. Take-home backpacks C. Family/teacher conference D. Weekly newsletters

TRUE OR FALSE A stable mixture of two or more mixable substances is called an emulsion

A chemical engineer is developing a process for producing a new chemical. One step in the process involves allowing a solution of potassium hydroxide to react with a solid. Which action would most likely increase the reaction rate for this step?