The number of protons in a atom is equivalent to which of the following a. atomic mass b. atomic symbol c. number d. atomic charge

As pressure of gas decreases the temperature?

In the formula XBr3, the symbol x could represent the element, A. Al B. Mg C. H or D. S

What is the empirical formula for a compound that contains 0.0134 g of iron, 0.00769 g of sulfur and 0.0115 g of oxygen?

What is the molecular geometry, or shape, of beryllium chloride (BeCl2) ? A. tetrahedral B. linear C. trigonal pyramid D. bent

During a new moon: the sun is between the moon and the earth the earth is between the sun and the moon the moon is between the sun and the earth

What is it called when energy is created without oxygen?

If 21.3 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 297 Kelvin and 1.40 atmospheres? Show all of the work used to solve this problem. 2Li (s) + 2H2O (l) - > 2LiOH (aq) + H2 (g)

How did coroners handle their responsibilities in the early 1900s? Why was there a need for significant change in the job?

Which of the following is the best indication that a chemical change has taken place? a. The matter changes color. b. A mixture separates into layers. c. The change is reversible. d. The shape of the substance changes.

This is not lost in a chemical Reaction (4 letter word second letter is A)