A penny weighs 250 centigrams. How may grams is this?

How many moles of oxygen are in 1 mole of Fe (NO3) 3?

What is heat transfer? Select one: O a. Thermal energy in transit due to spatial temperature difference o b. Thermal energy in transit due to spatial concentration difference O c. Thermal energy in transit due to spatial mass difference O d.

5. Identify the oxidation state of Ca in CaF2 (aq). Ca (s) + 2 HF (aq) → CaF2 (aq) + H2 (g)

What is the rate of the reaction 4 nh3 + 5 o2 → 4 no + 6 h2o when 0.0500 mol/l of nh3 is being consumed per second? 1. 0.0125 m·sec-1 2. one of the other answers has the right number but the units are wrong. 3. - 0.0125 m·sec-1 4. 0.200 m·sec-1 5.

What are facts of cytoplasm

The plunger on a bicycle pump with a 400 mL volume cylinder is depressed such that the pressure in the pump increases from 1.00 atm to 6.00 atm.

All of the following statements about protons are true except? A. Protons circle the nucleus of an atom. B. Protons carry a positive charge. C. Protons are found in the nucleus of an atom. D. Protons have a mass of 1 AMU.

What is a particle diagram to illustrate the composition of air

The net ionic equation for the reaction of aqueous iron (|||) ions and aqueous hydroxide ions.

Aspirin has a formula c9h8o4. what is the molar mass of aspirin? 1. 95 g 2. 220 g 3. 180 g 4. 325 g