An explanation as to How a catalyst works

Consider the given acid ionization constants. Identify the strongest conjugate base. Acid KaKa HNO2 (aq) HNO2 (aq) 4.6*10-44.6*10-4 HCHO2 (aq) HCHO2 (aq) 1.8*10-41.8*10-4 HClO (aq) HClO (aq) 2.9*10-82.9*10-8 HCN (aq) HCN (aq) 4.9*10-104.9*10-10

Which of the following is an example of an abiotic factor? A Creosote plant B Rocky desert soil C Kangaroo rat D Coyote

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)

Which property of iron is a physical property A. Ability to burn B. Ability to decompose C. Ability to bond D. Ability to conduct heat

What are 4 general properties of matter?

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?