Answer:
New substances are produced by a chemical change
Yes, 50 pennies plus 50 pennies equals 100 pennies minus 50pennies equals 50 pennies.
There are 0.454 kg in 1 lb
Cross multiply
0.454 kg = 1 lb
X kg. = 50 lb
50* 0.454 = 22.7 kg
Answer : 22.7 kg in 50 lbs
Explanation:
an increase in concentration increases the rate of the reaction. This is because there are more reactant particles available which allows for more effective collisions between reactant particles in a given period of time. More effective collisions bring about a faster rate of reaction.
Answer:
d an attraction between positive ions and electrons
