How many grams of oxygen are present in 76.8g of CO2

Explain why the stream of electrons is pushed into a circular path when the electrons enter the constant magnetic field produced by the helmholtz coils

A 45.30 g sample of solid mercury is initially at - 59.00°C. If the sample is heated at constant pressure ( = 1 atm), kJ of heat are needed to raise the temperature of the sample to 30.00°C.

Ionic compound of GaTe

City A in the Southern Hemisphere and City B in the Northern Hemisphere are located at the same latitude. Which statement is likely true about these cities? City B has the larger annual temperature range.

Describe the orbital diagram of an atom with 16 electrons. Explain how this orbital diagram demonstrates Hund's rule.

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.

The number of grams present in 1.35 mol of Fe is