Which category of galaxy dose not have a distinactive shape

A a barred - spiral galaxy

Ba spiral galaxy

C an elliptical galaxy

D an irregular galaxy

How many different elements have scientists discovered? 12, 112, 118, or more than 500?

Group the following electronic configurations of neutral elements in sets according to those you would expect to show similar chemical properties. a. 1s^22s^22p^63s^23p^3 b. 1s^22s^22p^63s^23p^63d^104s^24p^5 c. 1s^22s^22p^63s^23p^6 d. 1s^22s^22p^3

A homogeneous mixture consists of 12% ethanol, 28% methanol and 60% water. which of these is the solvent for the mixture? A. ethanol and methanol B. methanol C. ethanol D. water

Why was nutmeg also called the spice of madness

A cartain shade of blue has a frequency of 7.23*10^14 what is the energy exactly one photon of light

How are atoms and elements alike and different?

Define - Solute ...

Calculate the pH of 0.65 M H2SO4 (sulfuric acid) solution? (Ka2: 1.1x10-2)

Ozone reacts completely with NO, producing NO2 and O2. A 13.0 L vessel is filled with 1.30 mol of NO and 1.30 mol of O3 at 401.0 K. Find the partial pressure of each product and the total pressure in the flask at the end of the reaction.

Which particles make up the nucleus of an atom? protons and electrons neutrons and electrons protons only protons and neutrons neutrons only