Can someone please help me fix number 2, 3, and 5? 1. Combine iron and copper (II) sulfate solution. (Hint: Iron will form the iron (III) ion) Fe + CuSO4 → Fe2(SO4)3 + 3Cu 2. Combine lead (II) nitrate and potassium iodide solutions. Pb(NO3)2+ Kl → Pbl2+ 2KNO3 3. Combine magnesium metal and hydrochloric acid solution. Mg + 2HCl → MgCl2 + H2 4. Electrolysis (splitting) of water. 2H2O → 2H2 + 02 5. Burning magnesium. Mg + O2 → 2MgO

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)