Ions form when atoms gain or lose protons.

True or False.

Which unit can be used to express the rate of a reaction? A. m / s B. ml/g OC. g/ml D. mL/mol E. s/mL

The density of platinum is 21.45 g/cm3 at 20 ∘c. calculate the mass of 80.00 cm3 of platinum at this temperature.

Question 1 Which of the following is not necessary for the greenhouse effect? The sun The atmosphere The oceans Carbon dioxide Question 2 What is the difference between the greenhouse effect and global warming? 3.

A soil sample has 20% slit, 10% clay, and 70% sand. What kind of soil is it?

Metals are extracted from their ores. Many copper ores contain only 2% of copper compounds. Copper is now extracted from ores containing a low percentage of copper compounds. Suggest two reasons why.

How are real gases different from ideal gases?

Which one doesnt belong in the list below? A. a meter B. one liter C. One centimeter D. one kilometer

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?