In the formula 5CaSO4 the total number of sulfur atoms present is a. 1. b. 5. c. 9. d. 20?

Calculate oxidation number of C2H2O4

1) It does not conduct electricity in water. 2) It must have a molarity higher than 1.0 M. 3) It does not ionize well in water. 4) It is a strong electrolyte.

The enthalpy of formation of CO2 at 25oC is - 393.51 kJ/mol. What is the enthalpy of formation at 500 oC?

If hydrogen composes 11% of a 100 gram sample of water, what is the mass of the hydrogen in the sample?

When I2 and FeCl2 are mixed together, iodine (I) cannot replace chlorine (Cl) in the compound because iodine is lower on the periodic table. true/false

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.