Which of the following elements could be described as least reactive, relative to the other three answer choices?

A. Au

B. Ca

C. Fe

D. Mg

What is oxidized and what is reduced in this reaction? N 2 H 4 (l) + 2H 2 O 2 (l) N 2 (g) + 4H 2 O (g) Nis reduced and H is oxidized. Nis reduced and O is oxidized is oxidized and O is reduced oxidized and His reduced.

What is hard and symmetrical in shape, forms from a solution

What particle is needed to complete the following equation 14 7 n + 14 6 c + 1 1 h

How many moles of aluminum are needed to make 9 moles of molecular hydrogen? given the reaction: 2 al + 6 hcl → 2 alcl3 + 3h2 6 moles 4 moles 3 moles 2 moles none of the above?

Explain why noble gases usually do not form bonds with other atoms?

How much heat is needed to raise the temperature of 75 g of a substance by 15 C when the specific heat is 0.92 J/g-C?

A nitric acid solution flows at a constant rate of 5L/min into a large tank that initially held 200L of a 0.5% nitric acid solution. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 10L/min.

How many molecules are in 237g (about a cup of water)

3. A compound was analyzed and found to contain 9.8 g of nitrogen, 0.70 g of hydrogen, and 33.6 g of oxygen. What is the empirical formula of the compound?

A 126-gram sample of titanium metal is heated from 20.0°C to 45.4°C while absorbing 1.68 kJ of heat. What is the specific heat of titanium?