How many grams of hydrogen are needed to produce 1.80 g of water

If you remove enough heat from a liquid, it will become a?

What is the ratio of moles of sulfur to moles of sulfur trioxide in 25 + 302-->2SO3

How many miles are there in 20g of KClO3 (k=39 Cl=35.5 O=16)

Measurements that have similar values are

How did Robert Goddard contribute to space exploration? He was the first person in space. He was the first person to walk on the moon. He was the first person to use liquid fuel for rockets. He designed and built the first space station.

A piece of glass with a mass of 32.50 g specific heat of 0.840 J/g*°C and an initial temperature of 115 °C was dropped into a calorimeter containing 57 g of water (specific heat 4.184 J/g*°C).

Which of the following is the most likely description of the product or products of a double-displacement reaction? A) one new compound B) two new compounds C) oxygen and energy D) one new compound and an element

A balloon is filled with 12L of air at a pressure of 2 atm. What is the volume of ballon if the pressure is changed to 3 atm?

What ionic bond occurs between what particles? A. Two Negative Ions B. A positive and negative ion C. Two positive ions D. Two neutral atoms

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these