How many valence electrons does carbon have

If 3.00 g of titanium metal is reacted with 6.00 g of chlorine gas, cl2, to form 7.7 g of titanium (iv) chloride in a combination reaction, what is the percent yield of the product?

Which statement can best be concluded from the ideal gas law?

Explain how global warming could have affected yellowstone frog and salamander habitat's, resulting in changes in the populations of these species