Answer:
Organisms compete for the resources they need to which are survive- air, water, food, and space.
Answer:Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
Explanation:Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
Answer:
HBr + KOH = KBr + H2O
3 HF + Fe(OH)3 = FeF3 + 3 H2O
2 HCl + Ca(OH)2 = CaCl2 + 2 H2O
Explanation:
Dropping a 50 gram piece of metal with a temperature of 125° Celsius into 1000 grams of water at 20° Celsius would lead to a heat loss by the metal and an heat gain by the water. These loss and gain should be equal since energy cannot be created nor destroyed.
