How many protons and electrons are present in the mg2 + ion?

If an exothermic chemical reaction occurs, the surroundings become warmer. Where does this energy come from?

A student observed a chemical reaction in which the mass of the products was measured to be less than the mass of the reactants. How can this be explained?

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 4.10 kg of water at 37.5 degree C. During the reaction 125. kJ of heat flows out of the flask and into the bath.

Which of the following molecules can form hydrogen bonds like it A. NH3 B. CO2 C. CF4 D. HCl

6. If 0.500 mol NaN3 react, what mass in grams of nitrogen will result? 2 NaN3 → 2 Na + 3 N2 Show your work

I add 3.20 moles of Cu to an excess of AgNO3. How many miles of silver are formed?

Which phrase describes two forms of solid carbon, diamond and graphite, at STP? (1) the same crystal structure and the same properties (2) the same crystal structure and different properties (3) different crystal structures and the same properties

What would a 1:1 liquid binary mixture of Cyclohexane and Toluene look like? How would the molecules associate with one another?

What is the Ka'aba? an Islamic deity a Muslim pilgrim a book of Sharia laws an ancient stone temple

A cylinder has a height of 5.3 cm and a diameter of 3.0 cm. What is its volume?