If 3 g of element C combine with 8 g of element D to

form compound CD, how many grams of D are

needed to form compound CD2?

How many grams of P4O10 would be produced when 0.700 mole of phosphorus is burned?

Fill in each blank with the correct word. The male reproductive cell is called a (n) The female reproductive cell is called a (n) When the male and female reproductive cells join during fertilization, a forms.

What disease involves a crustacean as a vector

In which reaction does the oxidation number of hydrogen change? a. hcl (aq) + naoh (aq) → nacl (aq) + h2o (l) b. 2na (s) + 2h2o (l) → 2naoh (aq) + h2 (g) c. cao (s) + h2o (l) → ca (oh) 2 (s) d.

The molecular weight of acetic acid is 60. how much acetic acid would you need to prepare 10 ml of a 0.001 m (1.0 mm) solution?

Which of the following most likely explains why the chemical symbol for calcium is Ca? The symbol C was already used for carbon. The element is named after the Latin word for calcium. The symbol was assigned by modern alchemists.

Which of these instruments sends its measurements directly to a computer? A. graduated cylinder B. stopwatch C. temperature probe D. pH paper

Write the balanced molecular and net ionic equation for the reaction that occurs when the contents of the two beakers are added together. (use the lowest possible coefficients. include states-of-matter under satp conditions in your answer.)

Muscle physiologists study the accumulation of lactic acid [CH3CH (OH) COOH] during exercise. Food chemists study its occurrence in sour milk, beer, wine, and fruit.

Suppose that you have 23 g of silver. Also assume that this sample of silver is initially at 18 oC. What is the final temperature of this sample of silver after it absorbs 2.05 kJ of heat? csilver = 0.