One gallon of water has a mass of 3.78kg. Water is 11.2% hydrogen by mass. Calculate the mass of hydrogen contained in this gallon of water

What is reduced in the reaction Mn + HCl → MnCl2 + H2? 1. chlorine in HCl 2. This is not a redox reaction. 3. manganese 4. hydrogen in HCl

The total amount of water on Earth a. is increasing. b. is fairly constant. c. is decreasing. d. depends on the weather.

How to write a lap conclusion

which scientist proposed a modification to the theory of atomic number that esablished electron energy levels or shells

Most of our DNA consists of regions that do not code for any proteins True or False

The electron configuration 1s22s22p63s23p6 represents which noble gas?

What are some disadvantages of incinerators?

What mass of potassium chlorate would contain 40grams of oxygen?

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)