When 21.6 g of carbon were burned in the presence of 73.7 g of oxygen, 16.1 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

Trees obtain carbon from a decaying organisms b. sunlight c. the atmosphere d. none of the above

Which of the following is NOT true of solutions? Solutions are also homogeneous mixtures Dissolved particles in a solution are too small to be seen with the naked eye Dissolved particles in a solution can be removed by pouring the solution through a

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas.

How many moles of KMnO4 can be produced from 0.886 moles of carbon dioxide?

A bike is moving north when the rider applies the brakes. In which direction does the frictional force act between the ground and the bike's wheels? A. north B. south C. upward D. downward

Which organelles are unique to plant cells? chloroplasts mitochondria vacuoles nuclei

An atom that has 13 protons and 15 neutrons is an isotope of the element? How can I count it?

Which element is nuclear fusion least likely to produce? hydrogen, which has an approximate mass of 1 chlorine, which has an approximate mass of 35 argon, which has an approximate mass of 39 silicon, which has an approximate mass of 28 I know the

How deep does the surface current known as the Gulf Stream go A. 3,000 meters B. 3 meters C. 300 meters

What characteristics of a planet determine the strength of its gravitational force on other objects? A. diameter of the planet and its location in space B. the number of moons that the planet has C.