0.5 grams of Calcium was reacted with 0.01 L of a 2.5 M Phosphoric Acid What is the balanced chemical equation, limiting reactant, How many moles of hydrogen gas, and how many liters produced assuming the pressure is 1.01 atm and the temperature is 300 K.
Then what is the % yield if you only produced .98 grams of calcium phosphate?

Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?