The mass of an atom of element X is equivalent to the total mass of 7H atoms. Give the name and symbol of the element represented by X. ​

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?