How do oxygen atoms compare to hydrogen

dentify some other substances (besides KCl) that might give a positive test for chloride upon addition of AgNO3.

Identify the elements and the number of atoms of each element in BO2

A 0.0200 gram piece of unknown alkaline earth metal, M, is reacted with excess 0.500 M H 2 SO 4, and the hydrogen gas produced is collected over water. The total gas pressure inside the collecting tube is 1.01 atm., the temperature 24.0 o C.

Consider the reaction: C + O2 rightwards arrow CO2 + 393 kJ. When 2 mol of carbon react

Ejercicios sobre análisis gravimétrico y análisis volumétrico. 3. Calcule el pH de una solución que tiene una concentración de iones H3O + de 3.6x10-4 M 4. Calcule el volumen de H2SO4 0.2M que se requieren para titular 23 mL de NaOH 0.1M 5.

Why do alligators need a warm climate? A. They need to live in a place with enough food. B. They cannot produce enough heat to keep their bodies warm. C. They have scales rather than hair, which keeps them too hot. D.

What human body system can be fossilized? Explain

A reaction mixture initially contains 22.02 g Fe2O3 and 14.66 g CO. Assume that the reaction will progress to 100% completion. What mass (in g) of the excess reactant is leftover?

A cylinder at left with balls evenly spaced throughout the cylinder has an arrow leading to a cylinder at right cylinder with balls in a layer at its bottom. Which change of state is shown in the model?

Which ion was fomed by providing the second ionization to remove an electron A) ca2 + B) N3 - B) Fe3 + C) S2