How many regions are in the electromagnetic spectrum?

Joseph drives 25miles North in 15 minutes then he drives 40 miles east in 30 minutes, then he uses cruise control option for 1 hour and covers 70 miles on the highway and finally drives 15 miles in 15 minutes. What was his average speed?

We're does plants use their energy to make food

A small amount of a solid unknown compound was placed into a test tube containing isopropanol. The solid floats on top of the liquid isopropanol. Is this unknown compound considered to be soluble or insoluble?

Write the Henderson-Hasselbalch equation for a solution of formic acid.

An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has an atomic number of a. 38 and a mass number of 86. b.

It is widely known that fossil fuels pollute the environment and cause harmful effects. Why then are fossil fuels still being widely used? 1. not enough of society knows the harmful nature of fossil fuels 2.

What is hyphen notation

The density of aluminum is 2.70g/cm^3. a piece of aluminum foil has a volume of 54.0 cm^3. what is the mass of this piece of aluminum foil?

Describe how the atoms in Calcium Chloride obey the octet rule.

How many milliliters of 2.55M NaOH is needed to make 125mL of 0.75M NaOH solution?