Which of these is an element?

A. carbon

B. carbon dioxid

C. water

D. Air

5. A plant in a pot of soil is placed in bright sunlight for 12 hours a day. The plant is located near an open window with good air circulation. If the plant is left alone for a month, will it produce glucose? Why or why not?

A race car driver starts a race with his tires at 13.2 psi at a temperature of 25 C. What will the pressure in the tires be (in psi) when they heat up to 63 C?

What would happen if BHP changed to 45mmHg and the other pressures remained constant? A. Filtration would decrease, but still functionB. Filtration would increaseC. Filtration would cease

Five samples of argon gas are described in the table below. Rank the samples in order of increasing average kinetic energy of the atoms in them. That is, select "1" next to the sample in which the argon atoms have the lowest average kinetic energy.

The molecule CCl4 contains one double bond and three single bonds.

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension

What gas was used as a deadly posiosn in world war 1?

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).