What is the value of x?

X

51

160

x

How can evidence from an experiment be explained in relationship to the hypothesis? A) as a prediction B) as a question C) as an inference D) as a conclusion

The reactivity of an atom arises from a. The number of electrons in the nucleus. b. The number of protons in the nucleus. c. The number of electrons in the valence shell. d. The atomic mass.

Which of the following illustrates the conservation of matter? A. SnO2 + H2 - -> Sn + 2 H2O B. 2 C + O2 - -> CO2 C. KOH + HBr - -> KBr + H2O D. 6 Cs + N2 - -> 6 Cs3N I want to say B?

Which element is the most reactive out of the list below? A. nickel B. iron C. helium D. chlorine

1. Contrast the effects of the water cycle on a tropical region and on a desert region. Use complete sentences. 2. Explain how tornadoes can affect human life in Florida. Use complete sentences.

How many moles of Mgs203 are in 245g of the compound

A student was trying to obtain lithium by electrolysis of aqueous lithium chloride. Was he successful?

A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance.

Is the bonds that cause gaseous Cl2 to become liquid when cooled intramolecular or intermolecular

Describe an example of deposition