Strontium has four stable, naturally occurring isotopes: 84-Sr (0.56%), 86-Sr (9.86%), 87-Sr (7.0%) and 88-Sr (82.58%). 87.62 is standard atomic mass of strontium.
This is the unique answer
Answer:
A
Explanation:
the answer is a because the sun cannot stop burning but will rather burn hotter Then decay amongst the atoms in space
Answer:
The correct answer is <em>d. At equilibrium, the forward reaction and reverse reaction will have the same reaction rate.</em>
Explanation:
When a reaction begins, the reactants combine to form products. At the same time of product formation, the convertion of products into reactants also occur. The reaction reaches <em>chemical equilibrium </em>when the rate of forward reaction (the convertion of reactant into products) is equal to the rate of reverse reaction (the convertion of product into reactants). Upon this state, the concentration of reactants and products do not change in time (that does not mean that the concentration of reactants and products are equal, but that once the chemical equilibrium is reached, their concentrations at this point will not vary with the time because the forward and reverse reactions are occuring at the same velocity).
