The shortest wavelengths occur in the:

red end of the spectrum

blue end of the spectrum

middle of the spectrum

The light-gathering capacity of a telescope is dependent upon the:

magnification

focal length

size of human iris

area of aperture

What is the mass of a sample of a substance with a volume of 120 ml and a density of 0.75 g/ml?

How many grams of magnesium chloride can be produced if we react 32.50 g Mg with 32.50 g HCl

Will make Brainliest A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater atomic mass. Which element should the researcher select for the experiment? Nitrogen (N) Sulfur (S) Arsenic (As) Silicon (Si)

How many grams of oxygen are required to rect with 10.0 grams of octane in the combustion of octane gasoline?

Compare and contrast the way waves transmit energy and the way particles transmit energy

What is the specific heat capacity of a 17.5g sample of an unknown metal that releases 6700J of heat when it cools from 90 to 25 degrees C?

How can equilibrium of a closed system chemical reaction be disturbed? Select all that apply. Adding or removing products or reactants. Keeping the concentration of products and reactants the same. Keeping the temperature of the system constant.

Why does an exothermic reaction need activation energy?

The temperature of 15 grams of water increases by 3.0 degress. how much heat was absorbed by water?

What are the four types of stoichiometry problems?