J5 protons and 74 electrons

9.

As the number of neutrons in the nucleus of an atom increases, the nuclear charge of the atom

A.

decreases

B.

increases

C. remains the same

page 2

Chemistry CFA Unit 1

What is the molecular formula for a compound with an empirical formula of CH2O if its experimentally determined molecular weight is 180 amu?

The definition of absorption is the conversion of food, in the mouth, stomach and intestines, into soluble and diffusible material. Question 8 options: True False

What is the specific heat of titanium in j / (g⋅∘c) if it takes 89.7 j to raise the temperature of a 33.0 g block by 5.20 ∘c?

A monatomic ideal gas expands slowly to twice its original volume, doing 340 JJ of work in the process. Part APart complete Find the heat added to the gas if the process is isothermal.

Put the following in the correct chronological order from what happened first to what happened last. 1. Thought everything revolves around the sun but could not prove it. 2. Thought everything revolves around the Earth. 3.

What is the best reason for a student to remove a dangling bracelet when heating test tubes of acidic solutions in a hot-water bath in a chemistry lab?

What does the electron cloud model describe A. Rapidly moving neutrons B. Rapidly moving protons C. A standing wave of electron wavicles surrounding the nucleus D. Rapidly moving nucleus

35mL of acid with an unknown concentration is titrated to completion using 63mL of 3.0 MNaOH. What is the concentration of the acid?

What is the number of lone electron pairs on the central atom of a molecule having a linear molecular geometry, such as clf2-?

Look carefully at Kw expression. If the [H+] changed from [1 x 10-7] to [1 x 10-4], the [OH-] will: A. remain the same B. increase C. decrease