Which of these substances is not an element?

a. water

b. hydrogen

c. aluminum

d. iron

When electricity passes through a gas it may become hot enough to give off light how could scientist determine the element from which gas is made

A chemist has 2.0 mol of methanol (CH3OH). Molar mass of menthanol is 32.0g/mol. What is the mass, in grams, of the sample

What happens if u mix baking soda and vinger together

Four identical zinc plates are placed in four different solutions of sulfuric acid (H2SO4). The following reaction occurs: Zn + H2SO4 ZnSO4 + H2 In which concentration of sulfuric acid solution would the reaction occur the fastest? A. 0.16 M H2SO4 B.

The element Na, si, and p are? A in the same group B isotops C have the same number of p D in the same period E all of these

Which common material is an example of a polyamide?

A particular brand of gasoline has a density of 0.737 g/mL at 25 ∘ C. How many grams of this gasoline would fill a 12.8 gal tank (1US gal=3.78L) ?

A pump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of air in the pump? 0.2 l 1.0 l 2.0 l 4.0 l

How can there be snow near a giraffe's home This is actually science so yeah

If a sealed syringe that contains some gas in heated in which direction will the syringe plunger move