All atoms of the same element contain the same number of protons. the atom that has 9 protons can be represented by the symbol?

32) Home and Garden pH Indicators Beets Very basic solution changes from red to purple. Blueberries Blue pH 2.8-3.2. Turn red as solution becomes more acidic. Cherries Red in acidic solution; turns blue/purple in basic solution.

Use dimensional analysis to convert 4.68 g of Boron to cubic centimeters of Boron. The density of Boron is 2.34 g/cm^3

If a substance consists of only one kind of atom, it is an ... A. mixture B. element C. solution

How is carbon-14 is different from carbon-12?

Based on the activity series, which metals could X represent in the reaction below? (Note: The equation is not balanced.) X + MgSO4 - > Mg + XSO4 A) Sr B) Al C) Sn D) Au

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?

Consider the reaction: 8H2S (g) + 4O2 (g) →8H2O (g) + S8 (g). Δ[H2S]/Δt = - 0.033M/s. Find Δ[O2]/Δt. Δ[H2O]/Δt. Δ[S8]/Δt. Find the rate of the reaction.

At room temperature and pressure what is the volume of one mole of oxygen?