When an atom that has no charge loses two electrons, it becomes a 1. positive ion. 2. negative ion. 3. positive isotope. 4. negative isotope.

Convert 100 degrees Celsius to Fahrenheit

How are bacteria cells different from human cells? A. Bacteria cells do not contain a cytoplasm. B. Bacteria cells do not contain genetic material. C. Bacteria cells are much bigger than human cells. D.

Why are noble gases considered to be non-reactive

What is the percent composition of compound that has a total mass of 63.9 g that contains 51.0 g Cu and 12.9 g O?

The enzyme beta-galactosidase acts on lactose to form galactose. In turn, the presence of galactose leads to expression of the enzymes responsible for the metabolism of galactose. In this case, lactose is serving as a carbon source and as a (n) :

Select the compound that is not organic. sucrose carbon dioxide methane urea

You sealed an Erlenmeyer flask that was determined to have a volume of 272.2 mL with a stopper. The density of air at 25°C is 0.001185 g/mL. Air has an effective molar mass of 28.96 g/mol. What amount of air was sealed in the flask?

Let's say we start with 2.2lbs of uranium. If the half-line of U-235 is 703.8 million years, how much uranium will we have after 2,815 million years

When sulfuric acid (h2so4) loses its hydrogen in exchange for calcium it becomes a (ch 8) : ?

A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solution. How could you prepare the solution needed for the lab experiment? show all work to find your answer